Enable PIP test on windows

Author: youknowone

.github/workflows/ci.yaml

@@ -287,14 +287,12 @@ jobs:
         name: run cpython platform-dependent tests (windows partial - fixme)
         run:
           target/release/rustpython -m test -j 1 --slowest --fail-env-changed -v -x ${{ env.PLATFORM_INDEPENDENT_TESTS }} ${{ env.WINDOWS_SKIPS }}
-      - if: runner.os != 'Windows'
-        name: check that --install-pip succeeds
+      - name: check that --install-pip succeeds
         run: |
           mkdir site-packages
           target/release/rustpython --install-pip ensurepip --user
           target/release/rustpython -m pip install six
-      - if: runner.os != 'Windows'
-        name: Check that ensurepip succeeds.
+      - name: Check that ensurepip succeeds.
         run: |
           target/release/rustpython -m ensurepip
           target/release/rustpython -c "import pip"