chore: attempt to speed up tests

Author: parthea

.github/workflows/unittest.yml

@@ -48,7 +48,6 @@ jobs:
         TARGET_BRANCH: ${{ github.base_ref || github.event.merge_group.base_ref }}
         TEST_TYPE: unit
         PY_VERSION: ${{ matrix.python }}
-        VIRTUALENV_SEEDER: ${{ matrix.python == '3.15' && '' || 'uv' }}
         # Workaround: Allows libcst to compile on Python 3.15+ while PyO3 catches up
         # Can be removed once libcst releases a version with native Python 3.15 wheels
         # Follow https://github.com/Instagram/LibCST/issues/1445 for updates.