remove unnecessary pip upgrade for docs w/ burnettk

.github/workflows/docs.yml

@@ -20,20 +20,6 @@ jobs:
         uses: actions/setup-python@v4.6.1
         with:
           python-version: 3.11
-
-      - name: Upgrade pip
-        run: |
-          pip install --constraint=.github/workflows/constraints.txt pip
-          pip --version
-
-      - name: Upgrade pip in virtual environments
-        shell: python
-        run: |
-          import os
-          import pip
-
-          with open(os.environ["GITHUB_ENV"], mode="a") as io:
-              print(f"VIRTUALENV_PIP={pip.__version__}", file=io)
       - name: Pip Install
         run: |
           pip install -r requirements.txt