build: Remove outdated workflow step

No idea how this ended up in there

Author: defnull

.github/workflows/run_tests.yml

@@ -21,7 +21,5 @@ jobs:
         cache: pip
     - name: Install dev dependencies
       run: pip install .[dev]
-    - name: Install dependencies
-      run: .github/workflows/install-deps.sh
     - name: Run tests
       run: pytest -ra -q --cov=bottle --cov-report=term