[py] Remove Firefox on Windows because it's insanely slow

Author: cgoldberg

.github/workflows/ci-python.yml

@@ -140,8 +140,6 @@ jobs:
             os: windows
           - browser: edge
             os: windows
-          - browser: firefox
-            os: windows
     with:
       name: Integration Tests (${{ matrix.browser }}, ${{ matrix.os }})
       browser: ${{ matrix.browser }}