feat: delete deprecated Dataproc v1beta2 API client (#253)

See #249. Googlers see internal bug b/197576296. 

Committer: @medb
PiperOrigin-RevId: 392723737

Source-Link: googleapis/googleapis@8bf048d

Source-Link: googleapis/googleapis-gen@f45e49b

Author: parthea

.github/.OwlBot.yaml

@@ -18,6 +18,9 @@ docker:
 deep-remove-regex:
   - /owl-bot-staging
 
+deep-preserve-regex:
+  - /owl-bot-staging/v1beta2
+
 deep-copy-regex:
   - source: /google/cloud/dataproc/(v.*)/.*-py/(.*)
     dest: /owl-bot-staging/$1/$2

docs/dataproc_v1beta2/autoscaling_policy_service.rst

@@ -9,8 +9,6 @@ API Reference
 
    dataproc_v1/services
    dataproc_v1/types
-   dataproc_v1beta2/services
-   dataproc_v1beta2/types
 
 Migration Guide
 ---------------