dont install UV in github actions if we're not going to use it

Author: cyberw

.github/workflows/tests.yml

@@ -13,9 +13,6 @@ jobs:
       - uses: actions/setup-python@v5
         with:
           python-version: 3.13
-      - uses: astral-sh/setup-uv@v5
-        with:
-          version: "0.8.17"
       - run: pip install -U locust ruff pyright
       - run: ruff check
       - run: ruff format --check