[lldb] Remove use of __future__ in python

[bulbazord]

Summary

These were useful primarily for the Python 2 to 3 transition. Python 2
is no longer supported so these are no longer necessary.

[mib]

LGTM! Although we should make sure no one is still using Python 2 downstream

[JDevlieghere]

In D157759#4581673, @mib wrote:

LGTM! Although we should make sure no one is still using Python 2 downstream

Python 2 has been deprecated for a while and we've removed other stuff that makes it no longer possible to use Python 2.

lldb/docs/conf.py

 # -*- coding: utf-8 -*-
 #
 # LLDB documentation build configuration file, created by
 # sphinx-quickstart on Sun Dec  9 20:01:55 2012.
 #
 # This file is execfile()d with the current directory set to its containing dir.
 #
 # Note that not all possible configuration values are present in this
 # autogenerated file.
 #
 # All configuration values have a default; values that are commented out
 # serve to show the default.
-from __future__ import print_function
-
 import sys, os, re, shutil
 from datetime import date
 
 building_man_page = tags.has("builder-man")
 
 # For the website we need to setup the path to the generated LLDB module that
 # we can generate documentation for its API.
 if not building_man_page:

lldb/packages/Python/lldbsuite/support/gmodules.py

-from __future__ import absolute_import
-from __future__ import print_function
-
 # System modules
 import os
 import re
 
 
 GMODULES_SUPPORT_MAP = {}
 GMODULES_HELP_REGEX = re.compile(r"\s-gmodules\s")
 

lldb/packages/Python/lldbsuite/test/__init__.py

 # Module level initialization for the `lldbsuite.test` module.
 
-from __future__ import absolute_import
-
 from . import dotest
 
 run_suite = dotest.run_suite

lldb/packages/Python/lldbsuite/test/bench.py

 #!/usr/bin/env python
 
 """
 A simple bench runner which delegates to the ./dotest.py test driver to run the
 benchmarks defined in the list named 'benches'.
 
 You need to hand edit 'benches' to modify/change the command lines passed to the
 test driver.
 
 Use the following to get only the benchmark results in your terminal output:
 
     ./bench.py -e /Volumes/data/lldb/svn/regression/build/Debug/lldb -x '-F Driver::MainLoop()' 2>&1 | grep -P '^lldb.*benchmark:'
 """
 
-from __future__ import print_function
-from __future__ import absolute_import
-
 import os
 from optparse import OptionParser
 
 # dotest.py invocation with no '-e exe-path' uses lldb as the inferior program,
 # unless there is a mentioning of custom executable program.
 benches = [
     # Measure startup delays creating a target, setting a breakpoint, and run
     # to breakpoint stop.

lldb/packages/Python/lldbsuite/test/configuration.py

 """
 Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
 See https://llvm.org/LICENSE.txt for license information.
 SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
 
 Provides the configuration class, which holds all information related to
 how this invocation of the test suite should be run.
 """
 
-from __future__ import absolute_import
-from __future__ import print_function
-
 # System modules
 import os
 
 
 # Third-party modules
 import unittest2
 
 # LLDB Modules

lldb/packages/Python/lldbsuite/test/decorators.py

-from __future__ import absolute_import
-
 # System modules
 from distutils.version import LooseVersion
 from functools import wraps
 import ctypes
 import locale
 import os
 import platform
 import re

lldb/packages/Python/lldbsuite/test/dotest.py

 
 Type:
 
 ./dotest.py -h
 
 for available options.
 """
 
-from __future__ import absolute_import
-from __future__ import print_function
-
 # System modules
 import atexit
 import datetime
 import errno
 import logging
 import os
 import platform
 import re

lldb/packages/Python/lldbsuite/test/dotest_args.py

-from __future__ import absolute_import
-
 # System modules
 import argparse
 import sys
 import os
 import textwrap
 
 # LLDB modules
 from . import configuration

lldb/packages/Python/lldbsuite/test/lldb_pylint_helper.py

 """
 Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
 See https://llvm.org/LICENSE.txt for license information.
 SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
 
 Sync lldb and related source from a local machine to a remote machine.
 
 This facilitates working on the lldb sourcecode on multiple machines
 and multiple OS types, verifying changes across all.
 
 Provides helper support for adding lldb test paths to the python path.
 """
 
-from __future__ import print_function
-from __future__ import absolute_import
-
 # System modules
 import os
 import platform
 import subprocess
 import sys
 
 # Third-party modules
 

lldb/packages/Python/lldbsuite/test/lldbbench.py

-from __future__ import absolute_import
-
 # System modules
 import time
 
 # Third-party modules
 
 # LLDB modules
 from .lldbtest import *
 

lldb/packages/Python/lldbsuite/test/lldbinline.py

-from __future__ import print_function
-from __future__ import absolute_import
-
 # System modules
 import os
 import textwrap
 
 # Third-party modules
 import io
 
 # LLDB modules

lldb/packages/Python/lldbsuite/test/lldbpexpect.py

-from __future__ import absolute_import
-
 # System modules
 import os
 import sys
 
 # LLDB Modules
 import lldb
 from .lldbtest import *
 from . import lldbutil

lldb/packages/Python/lldbsuite/test/lldbplatform.py

 """ This module represents an abstraction of an lldb target / host platform. """
 
-from __future__ import absolute_import
-
 # System modules
 import itertools
 
 # LLDB modules
 import lldb
 
 (
     windows,

lldb/packages/Python/lldbsuite/test/lldbplatformutil.py

 """ This module contains functions used by the test cases to hide the
 architecture and/or the platform dependent nature of the tests. """
 
-from __future__ import absolute_import
-
 # System modules
 import itertools
 import re
 import subprocess
 import sys
 import os
 from urllib.parse import urlparse
 

lldb/packages/Python/lldbsuite/test/lldbtest.py

 ........................................................................
 ----------------------------------------------------------------------
 Ran 72 tests in 135.468s
 
 OK
 $
 """
 
-from __future__ import absolute_import
-from __future__ import print_function
-
 # System modules
 import abc
 from distutils.version import LooseVersion
 from functools import wraps
 import gc
 import glob
 import io
 import json

lldb/packages/Python/lldbsuite/test/lldbutil.py

 """
 This LLDB module contains miscellaneous utilities.
 Some of the test suite takes advantage of the utility functions defined here.
 They can also be useful for general purpose lldb scripting.
 """
 
-from __future__ import print_function
-from __future__ import absolute_import
-
 # System modules
 import errno
 import io
 import os
 import re
 import sys
 import subprocess
 from typing import Dict

lldb/packages/Python/lldbsuite/test/test_categories.py

 """
 Provides definitions for various lldb test categories
 """
 
-from __future__ import absolute_import
-from __future__ import print_function
-
 # System modules
 import sys
 
 # Third-party modules
 
 # LLDB modules
 from lldbsuite.support import gmodules
 

lldb/packages/Python/lldbsuite/test/tools/lldb-server/gdbremote_testcase.py

 """
 Base class for gdb-remote test cases.
 """
 
-from __future__ import division, print_function
-
-
 import errno
 import os
 import os.path
 import random
 import re
 import select
 import socket
 import subprocess

lldb/packages/Python/lldbsuite/test/tools/lldb-server/lldbgdbserverutils.py

 """Module for supporting unit testing of the lldb-server debug monitor exe.
 """
 
-from __future__ import division, print_function
-
 import binascii
 import os
 import os.path
 import platform
 import re
 import socket
 import subprocess
 from lldbsuite.support import seven

lldb/scripts/android/host_art_bt.py

 # Usage:
 #   art/test/run-test --host --gdb [--64] [--interpreter] 004-JniTest
 #   'b Java_Main_shortMethod'
 #   'r'
 #   'command script import host_art_bt.py'
 #   'host_art_bt'
 
-from __future__ import print_function
-
 import sys
 import re
 
 import lldb
 
 
 def host_art_bt(debugger, command, result, internal_dict):
     prettified_frames = []

lldb/third_party/Python/module/progress/progress.py

 #!/usr/bin/env python
 
-from __future__ import print_function
-
 import use_lldb_suite
 
 import sys
 import time
 
 
 class ProgressBar(object):
     """ProgressBar class holds the options of the progress bar.

lldb/third_party/Python/module/unittest2/unittest2/test/test_result.py

-from __future__ import print_function
-
 import sys
 import textwrap
 from StringIO import StringIO
 
 import unittest2
 
 
 class Test_TestResult(unittest2.TestCase):

lldb/third_party/Python/module/unittest2/unittest2/test/test_unittest2_with.py

-from __future__ import with_statement
-
 import unittest2
 from unittest2.test.support import OldTestResult, catch_warnings
 
 import warnings
 # needed to enable the deprecation warnings
 warnings.simplefilter('default')
 
 

lldb/tools/intel-features/intel-mpx/test/TestMPXTable.py

 """
 Test mpx-table command.
 """
 
-from __future__ import print_function
-
-
 import os
 import time
 import re
 import lldb
 from lldbsuite.test.decorators import *
 from lldbsuite.test.lldbtest import *
 from lldbsuite.test import lldbutil
 

lldb/utils/lui/lldbutil.py

 ##===-- lldbutil.py ------------------------------------------*- Python -*-===##
 ##
 # Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
 # See https://llvm.org/LICENSE.txt for license information.
 # SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
 ##
 ##===----------------------------------------------------------------------===##
 
 """
 This LLDB module contains miscellaneous utilities.
 Some of the test suite takes advantage of the utility functions defined here.
 They can also be useful for general purpose lldb scripting.
 """
 
-from __future__ import print_function
-
 import lldb
 import os
 import sys
 import io
 
 # ===================================================
 # Utilities for locating/checking executable programs
 # ===================================================