scripts: check_compliance: un-ignore diff and patch for CheckPatch

Un-ignore diff and patch files for CheckPatch.

This was originally added to avoid throwing false-positives when diff
and patch files were actually in the repo, since it would incorrectly
try to perform code-formatting checks on those files instead of on
the content of the commit.

Signed-off-by: Chris Friedt <cfriedt@tenstorrent.com>

Author: cfriedt

scripts/ci/check_compliance.py

@@ -261,7 +261,7 @@ def run(self):
             cmd = [checkpatch]
 
         cmd.extend(['--mailback', '--no-tree', '-'])
-        diff = subprocess.Popen(('git', 'diff', '--no-ext-diff', '--', ':!*.diff', ':!*.patch', COMMIT_RANGE),
+        diff = subprocess.Popen(('git', 'diff', '--no-ext-diff', COMMIT_RANGE),
                                 stdout=subprocess.PIPE,
                                 cwd=GIT_TOP)
         try: