remove no need overlook test path

[xchwan]

issue: #35442

I have check there are 3 test path in google provider can be removed.
google/cloud/fs/test_gcs.py(exist)
google/cloud/operators/vertex_ai/test_ray.py(exist)
google/cloud/links/test_datacatalog.py(no source)

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  Cluade Code Sonnet 4.6

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