Fix pep8

tools/generate_meta.py

@@ -19,7 +19,6 @@ import logging
 import pathlib
 import requests
 import subprocess
-import sys
 
 from git import exc
 from git import Repo
@@ -319,9 +318,9 @@ def process_service(args, service):
 
     new_branch.checkout()
 
-    rst_files = list(repo_dir.rglob("doc/**/*.rst")) + \
-                list(repo_dir.rglob("umn/**/*.rst")) + \
-                list(repo_dir.rglob("api-ref/**/*.rst"))
+    rst_files = (list(repo_dir.rglob("doc/**/*.rst"))
+                 + list(repo_dir.rglob("umn/**/*.rst"))
+                 + list(repo_dir.rglob("api-ref/**/*.rst")))
 
     processed_count = 0
     updated_count = 0