chore: remove autogen-snippets options with no value

[jskeet]

These are equivalent to autogen-snippets=True, which is already the default.

Fixes googleapis/librarian#5525

[gemini-code-assist]

Code Review

This pull request removes the autogen-snippets option from the Python API configurations for Document AI and Private Catalog in librarian.yaml. Feedback was provided to sort the remaining options alphabetically to enhance maintainability and consistency.

[gemini-code-assist]

For consistency and better maintainability, please sort the opt_args_by_api lists for v1 and v1beta3 alphabetically. This makes it easier to find specific options and aligns with the repository's preference for sorted collections.

        google/cloud/documentai/v1:
          - python-gapic-name=documentai
          - python-gapic-namespace=google.cloud
          - warehouse-package-name=google-cloud-documentai
        google/cloud/documentai/v1beta3:
          - python-gapic-name=documentai
          - python-gapic-namespace=google.cloud
          - warehouse-package-name=google-cloud-documentai

References

1. A general rule in this repository is to keep collections sorted to improve maintainability and consistency. While the rule specifically mentions dictionary keys, the same principle applies to this list of options.

[gemini-code-assist]

For consistency and better maintainability, please sort the opt_args_by_api list alphabetically. This makes it easier to find specific options and aligns with the repository's preference for sorted collections.

          - python-gapic-name=privatecatalog
          - python-gapic-namespace=google.cloud
          - warehouse-package-name=google-cloud-private-catalog

References

1. A general rule in this repository is to keep collections sorted to improve maintainability and consistency. While the rule specifically mentions dictionary keys, the same principle applies to this list of options.