Satisfy "Codacy/PR Quality Review"

cps/helper.py

@@ -552,7 +552,7 @@ def is_sha1(sha1):
     if len(sha1) != 40:
         return False
     try:
-        temp = int(sha1, 16)
+        int(sha1, 16)
     except ValueError:
         return False
     return True

cps/web.py

@@ -1,7 +1,5 @@
 #!/usr/bin/env python
 # -*- coding: utf-8 -*-
-from builtins import OSError
-
 try:
     from googleapiclient.errors import HttpError
 except ImportError: