[pre-commit.ci] auto fixes from pre-commit.com hooks

for more information, see https://pre-commit.ci

setup.py

@@ -22,7 +22,7 @@ def package_files(package_dir, subdirectory):
  """
  paths = []
  directory = os.path.join(package_dir, subdirectory)
- for (path, directories, filenames) in os.walk(directory):
+ for path, directories, filenames in os.walk(directory):
  for filename in filenames:
  path = path.replace(package_dir + "/", "")
  paths.append(os.path.join(path, filename))