remove skip release

Author: ohmayr

librarian.yaml

@@ -636,7 +636,6 @@ libraries:
       - path: google/bigtable/v2
       - path: google/bigtable/admin/v2
     skip_generate: true
-    skip_release: true
     python:
       library_type: GAPIC_COMBO
       opt_args_by_api:
@@ -1688,7 +1687,6 @@ libraries:
     apis:
       - path: google/pubsub/v1
     skip_generate: true
-    skip_release: true
     python:
       library_type: GAPIC_COMBO
       opt_args_by_api:
@@ -1924,7 +1922,6 @@ libraries:
       - path: google/spanner/admin/instance/v1
       - path: google/spanner/admin/database/v1
     skip_generate: true
-    skip_release: true
     keep:
       - docs/spanner_v1/batch.rst
       - docs/spanner_v1/client.rst