update windows CI builds again

.github/workflows/build_examples.yml

@@ -77,17 +77,7 @@ jobs:
           chmod 600 $env:USERPROFILE\.ssh\id_rsa
 
       - name: Install Manta from Source
-        run: |
-          pip install setuptools --upgrade
-
-          # omitting the following commmand causes the version of setuptools
-          # used by python to get confused, and it doesn't detect the name
-          # or version of the package from pyproject.toml - so the following
-          # workaround is used:
-          # https://github.com/pypa/setuptools/issues/3269#issuecomment-1254507377
-          export DEB_PYTHON_INSTALL_LAYOUT=deb_system
-
-          python3 -m pip install .
+        run: python3 -m pip install .
 
       - name: Build io_core
         run: make nexys_a7_io_core