Fix: Rename tox job and remove pre-commit

Fix: Rename tox job and remove pre-commit

This commit 0ff7cbacb76c80c8e2222 previously removed the tox job
however did not remove the depenencies.

This causes the verify workflow to fail with the following message:
Invalid workflow file: .github/workflows/gerrit-verify.yaml#L85
The workflow is not valid.
.github/workflows/gerrit-verify.yaml (Line: 85, Col: 22):
Job 'vote' depends on unknown job 'pre-commit'.
.github/workflows/gerrit-verify.yaml (Line: 85, Col: 34):
Job 'vote' depends on unknown job 'tox'.

Issue: RELENG-5138
Change-Id: I079fa354d70046df1083c08166f33b9ce2073d15
Signed-off-by: Anil Belur <abelur@linuxfoundation.org>