Remove pip caching

.github/workflows/pytest.yml

@@ -15,15 +15,6 @@ jobs:
       uses: actions/setup-python@v2
       with:
         python-version: ${{ matrix.python-version }}
-    - name: Cache pip
-      uses: actions/cache@v2
-      with:
-        # This path is specific to Ubuntu
-        path: ~/.cache/pip
-        # Look to see if there is a cache hit for the corresponding requirements file
-        key: ${{ runner.os }}-pip-${{ hashFiles('requirements.txt') }}
-        restore-keys: |
-          ${{ runner.os }}-pip-${{ runner.os }}-
     - name: Install dependencies
       run: |
         python -m pip install uv