tools/codeformat.py: Fix ruff warnings.

Signed-off-by: Jim Mussared <jim.mussared@gmail.com>

tools/codeformat.py

@@ -76,7 +76,7 @@ def main():
             # Filter against the default list of files. This is a little fiddly
             # because we need to apply both the inclusion globs given in PATHS
             # as well as the EXCLUSIONS, and use absolute paths
-            files = set(os.path.abspath(f) for f in files)
+            files = {os.path.abspath(f) for f in files}
             all_files = set(list_files(PATHS, EXCLUSIONS, TOP))
             if args.v:  # In verbose mode, log any files we're skipping
                 for f in files - all_files: