Autogenerated update (2020-09-28)

Update:
- servicecontrol_v1

generated/google/apis/servicecontrol_v1/classes.rb

@@ -400,8 +400,7 @@ module Google
         attr_accessor :principal_email
       
         # String representation of identity of requesting party. Populated for both
-        # first and third party identities. Only present for APIs that support third-
-        # party identities.
+        # first and third party identities.
         # Corresponds to the JSON property `principalSubject`
         # @return [String]
         attr_accessor :principal_subject