Remove `wait_for_tag` from tests to speed up test

[bearomorphism]

Description

The function wait_for_tag is already marked as deprecated.

I have tried to follow the instruction, but the test still fails 80% of time

use `create_file_and_commit(filename, committer_date={your_date})` to order tags instead

The commit: bearomorphism@d1cd09f

If we can remove this completely, the tests can be finished with shorter time.

Steps to reproduce

NA

Current behavior

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Desired behavior

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Screenshots

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Environment

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