Remove conda_build/index.py

[dholth]

Checklist

• I added a descriptive title
• I searched open requests and couldn't find a duplicate

What is the idea?

With standalone conda-index, conda-build's legacy (slow) index code is no longer needed.

Should we rewrite the conda index command in terms of standalone conda-index? Can we remove that too and use python3 -m conda_index's improved but different click-based CLI?

[dholth]

See #5152 ; index is deprecated.

[github-actions]

Hi there, thank you for your contribution!

This issue has been automatically marked as stale because it has not had recent activity. It will be closed automatically if no further activity occurs.

If you would like this issue to remain open please:

1. Verify that you can still reproduce the issue at hand
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Thanks!

[beckermr]

Not stale.

[github-actions]

Hi there, thank you for your contribution!

This issue has been automatically marked as stale because it has not had recent activity. It will be closed automatically if no further activity occurs.

If you would like this issue to remain open please:

1. Verify that you can still reproduce the issue at hand
2. Comment that the issue is still reproducible and include:
   - What OS and version you reproduced the issue on
   - What steps you followed to reproduce the issue

NOTE: If this issue was closed prematurely, please leave a comment.

Thanks!

[beckermr]

No stale!