requirements-test: Drop pre-commit
pre-commit is needed externally, not for the actual swh.core tests
Test Plan
tox -e py3
Migrated from D6858 (view on Phabricator)
Staging instance, all changes can be removed at any time
pre-commit is needed externally, not for the actual swh.core tests
tox -e py3
Migrated from D6858 (view on Phabricator)