ci: No longer install tox during the build job.

It isn't used during the build job.

Signed-off-by: Michael Seifert <[email protected]>

Author: seifertm

.github/workflows/main.yml

@@ -35,7 +35,7 @@ jobs:
     - name: Run pre-commit checks
       run: pre-commit run --all-files --show-diff-on-failure
     - name: Install check-wheel-content, and twine
-      run: python -m pip install build check-wheel-contents tox twine
+      run: python -m pip install build check-wheel-contents twine
     - name: Build package
       run: python -m build
     - name: List result