remove os from lint job matrix

Author: samuelcolvin

.github/workflows/ci.yml

@@ -18,7 +18,6 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        os: [ubuntu, macos, windows]
         python-version: ['3.7', '3.8', '3.9', '3.10', '3.11']
     steps:
       - uses: actions/checkout@v3