Revert "Fixup: Try to install setuptools to see if it builds c ext"

This reverts commit 9791a3fbc76571806d18da44515a2746fbe7cd18.
diff --git a/.github/workflows/pypi.yml b/.github/workflows/pypi.yml
index 2d59475..1a12097 100644
--- a/.github/workflows/pypi.yml
+++ b/.github/workflows/pypi.yml
@@ -23,8 +23,6 @@
 
       - name: Build
         run: |
-          python -m pip install --upgrade pip
-          python -m pip install setuptools
           cd lib/py
           python setup.py sdist