chore: revert CI workflow YAMLs to main versions

.github/workflows/tests.yml

@@ -35,10 +35,6 @@ jobs:
           pip install -r requirements.txt pytest
           pip install -e .
 
-      - name: Run fast unit & smoke tests
-        run: |
-          pytest -m "not integration"
-
       - name: Build providers
         run: |
           llama stack build --template ${{ matrix.provider }} --image-type venv