gh-120417: Remove unused imports in Tools (#120623)

PC/layout/__main__.py

@@ -1,7 +1,7 @@
 import sys
 
 try:
-    import layout
+    import layout  # noqa: F401
 except ImportError:
     # Failed to import our package, which likely means we were started directly
     # Add the additional search path needed to locate our module.

Tools/build/freeze_modules.py

@@ -5,10 +5,10 @@
 
 from collections import namedtuple
 import hashlib
-import os
 import ntpath
+import os
 import posixpath
-import argparse
+
 from update_file import updating_file_with_tmpfile
 
 

Tools/patchcheck/patchcheck.py

@@ -1,8 +1,6 @@
 #!/usr/bin/env python3
 """Check proposed changes for common issues."""
-import re
 import sys
-import shutil
 import os.path
 import subprocess
 import sysconfig

Tools/ssl/make_ssl_data.py

@@ -15,7 +15,6 @@
 import operator
 import os
 import re
-import sys
 
 
 parser = argparse.ArgumentParser(