[OpenMP] Remove unnecceary OMPT flag from builder factory

[jplehr]

Summary

The OMPT option defaults to "ON" in the OpenMP project CMake. To remove
potential confusion whether OMPT support is enabled in a buildbot,
remove this argument. It was only able to *enable* OMPT support and is
now useless.

If OMPT support should be disabled in a buildbot, this should be made
explicit via the additional CMake flag.

[jdoerfert]

I think the conclusion was we don't want this.

[jplehr]

Rebase and ready to land

zorg/buildbot/builders/OpenMPBuilder.py

 from buildbot.steps.shell import ShellCommand
 from buildbot.process.properties import WithProperties
 from buildbot.plugins import steps
 
 from zorg.buildbot.commands.LitTestCommand import LitTestCommand
 from zorg.buildbot.commands.CmakeCommand import CmakeCommand
 from zorg.buildbot.commands.NinjaCommand import NinjaCommand
 from zorg.buildbot.builders import UnifiedTreeBuilder
 from zorg.buildbot.process.factory import LLVMBuildFactory
 
 def getOpenMPCMakeBuildFactory(
         jobs                = '%(jobs)s',   # Number of concurrent jobs.
         clean               = True,         # "clean" step is requested if true
         env                 = None,         # Environmental variables for all steps.
-        ompt                = False,        # Whether to enable the OpenMP Tools Interface.
         test                = True,         # Test the built libraries.
         depends_on_projects = None,
         enable_runtimes     = None,
         extraCmakeArgs      = [],
         install             = False,
         testsuite           = False,
         testsuite_sollvevv  = False,
         extraTestsuiteCmakeArgs = [],
def getOpenMPCMakeBuildFactory(
 
     f.addStep(steps.RemoveDirectory(name='clean',
                            dir=f.obj_dir,
                            warnOnFailure=True,
                            doStepIf=cleanObjRequested))
 
     # Configure LLVM and OpenMP (and Clang, if requested).
     cmake_args = ['-DCMAKE_BUILD_TYPE=Release', '-DLLVM_ENABLE_ASSERTIONS=ON']
-    if ompt:
-        cmake_args += ['-DLIBOMP_OMPT_SUPPORT=ON']
     if test:
         lit_args = '-vv --show-unsupported --show-xfail -j %s' % jobs
         cmake_args += [WithProperties('-DLLVM_LIT_ARGS=%s' % lit_args)]
     if install:
         cmake_args += [WithProperties('-DCMAKE_INSTALL_PREFIX=%(builddir)s/' + llvm_instdir)]
     cmake_args += extraCmakeArgs
 
     if f.enable_projects: