chore(compute): clean up unused code migrated to client_library

[amcolin]

Description

Removes legacy compute logic that is now redundant following the full migration of functionality to the compute_v1 library.

Fixes Internal b/528399778

Checklist

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.

---

Post-Approval Actions

• Please merge this PR for me once it is approved

[gemini-code-assist]

Code Review

This pull request removes the Compute Engine API sample files, including the main script create_instance.py, its unit tests, requirements files, and the startup script. Since there are no review comments, I have no additional feedback to provide.

[snippet-bot]

Here is the summary of changes.

You are about to delete 2 region tags.

• compute/api/create_instance.py:53, tag compute_create_instance
• compute/api/create_instance.py:165, tag compute_wait_for_operation

---

This comment is generated by snippet-bot.
If you find problems with this result, please file an issue at:
https://github.com/googleapis/repo-automation-bots/issues.
To update this comment, add snippet-bot:force-run label or use the checkbox below:

• Refresh this comment