revert api and metadata

Author: ohmayr

gapic/schema/api.py

@@ -492,9 +492,7 @@ def disambiguate_keyword_sanitize_fname(
         # Parse the google.api.Service proto from the service_yaml data.
         service_yaml_config = service_pb2.Service()
         ParseDict(
-            opts.service_yaml_config,
-            service_yaml_config,
-            ignore_unknown_fields=True,
+            opts.service_yaml_config, service_yaml_config, ignore_unknown_fields=True
         )
         gapic_version = opts.gapic_version
 

gapic/schema/metadata.py

@@ -28,7 +28,7 @@
 
 import dataclasses
 import re
-from typing import FrozenSet, Set, Tuple, Optional, Dict
+from typing import FrozenSet, Set, Tuple, Optional
 
 from google.protobuf import descriptor_pb2