Remove Linux support as String Catalogs not supported there

Author: Jeehut

.github/workflows/main.yml

@@ -4,15 +4,6 @@ on:
   pull_request:
 
 jobs:
-  test-linux:
-    runs-on: ubuntu-latest
-
-    steps:
-      - uses: actions/checkout@v4
-
-      - name: Run tests
-        run: swift test
-
   test-macos:
     runs-on: macos-15