Remove setup-xcode

Author: backslash-f

.github/workflows/swift.yml

@@ -3,8 +3,9 @@ name: "CI"
 
 on:
   push:
-    branches:
-      - main
+    branches: [main]
+  pull_request:
+    branches: [main]
 
 concurrency:
   group: ${{ github.workflow }}-${{ github.ref }}
@@ -14,9 +15,6 @@ jobs:
   test:
     runs-on: macOS-latest
     steps:
-      - uses: maxim-lobanov/setup-xcode@v1
-        with:
-          xcode-version: latest-stable
       - uses: actions/checkout@v4
       - name: Run Tests
         run: swift test -v