Revert "test in macos to verify filesystem differences"

This reverts commit ed1631e.

See https://github.com/47degrees/.github/issues/109

Author: James Santucci

.github/workflows/ci.yml

@@ -12,10 +12,7 @@ on:
 jobs:
   test:
     if: "!contains(github.event.head_commit.message, 'skip ci')"
-    runs-on: ${{ matrix.os }}
-    strategy:
-      matrix:
-        os: [macos-latest, ubuntu-latest]
+    runs-on: ubuntu-latest
     steps:
       - name: Checkout project (pull-request)
         if: github.event_name == 'pull_request'