refactor(vertexai/tuning): removed deprecated vertexai.tuning files

[Kef131]

Description

Fixes #
b/542303427

Removed:

• supervised_example.py generativeaionvertexai_tuning_basic
• supervised_advanced_example.py generativeaionvertexai_tuning_advanced
• supervised_get_example.py generativeaionvertexai_get_tuning_job
• supervised_list_example.py generativeaionvertexai_list_tuning_jobs

files were deprecated and samples were removed.

Testing

• I have tested this change on a live environment and verified it works as intended.

Compliance & Style

• I have followed the Sample Guidelines.
• The README is updated with all relevant information (if applicable).
• If this PR adds a new sample directory: I updated the CODEOWNERS file.

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Post-Approval Actions

• Please merge this PR for me once it is approved

[snippet-bot]

Here is the summary of changes.

You are about to delete 4 region tags.

• generative_ai/model_tuning/supervised_advanced_example.py:23, tag generativeaionvertexai_tuning_advanced
• generative_ai/model_tuning/supervised_example.py:23, tag generativeaionvertexai_tuning_basic
• generative_ai/model_tuning/supervised_get_example.py:24, tag generativeaionvertexai_get_tuning_job
• generative_ai/model_tuning/supervised_list_example.py:25, tag generativeaionvertexai_list_tuning_jobs

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[gemini-code-assist]

Code Review

This pull request deletes the Python script demonstrating basic Gemini model tuning using Vertex AI's supervised tuning (sft). I have no feedback to provide as there are no review comments.

[XrossFox]

LGTM