[clang] scan-view: Remove unused python import

[tuliom]

Summary

[clang] scan-view: Remove unused python import

Python's module imp is not being used and is not available on Python
3.12 anymore.

clang/tools/scan-view/bin/scan-view

 #!/usr/bin/env python
 
 from __future__ import print_function
 
 """The clang static analyzer results viewer.
 """
 
 import sys
-import imp
 import os
 import posixpath
 import threading
 import time
 try:
     from urllib.request import urlopen
 except ImportError:
     from urllib2 import urlopen