Remove all python repositories except google-cloud-python

Author: parthea

internal/legacylibrarian/legacyautomation/prod/repositories.yaml

@@ -24,23 +24,3 @@ repositories:
       - generate
       - stage-release
       - publish-release
-  - name: "python-bigquery-dataframes"
-    full-name: https://github.com/googleapis/python-bigquery-dataframes
-    github-token-secret-name: "python-bigquery-dataframes-github-token"
-    supported-commands:
-      - publish-release
-  - name: "python-bigtable"
-    full-name: https://github.com/googleapis/python-bigtable
-    github-token-secret-name: "python-bigtable-github-token"
-    supported-commands:
-      - publish-release
-  - name: "python-pubsublite"
-    full-name: https://github.com/googleapis/python-pubsublite
-    github-token-secret-name: "python-pubsublite-github-token"
-    supported-commands:
-      - publish-release
-  - name: "sphinx-docfx-yaml"
-    full-name: https://github.com/googleapis/sphinx-docfx-yaml
-    github-token-secret-name: "sphinx-docfx-yaml-github-token"
-    supported-commands:
-      - publish-release