re-enable mypy

Author: abbrowne126

noxfile.py

@@ -117,8 +117,7 @@ def mypy(session):
     # TODO: Only check the hand-written layer, the generated code does not pass
     # mypy checks yet.
     # https://github.com/googleapis/gapic-generator-python/issues/1092
-    # TODO: Re-enable mypy checks once we merge, since incremental checks are failing due to protobuf upgrade
-    # session.run("mypy", "-p", "google.cloud", "--exclude", "google/pubsub_v1/")
+    session.run("mypy", "-p", "google.cloud", "--exclude", "google/pubsub_v1/")
 
 
 @nox.session(python=DEFAULT_PYTHON_VERSION)