Swift: drop redundant workflow

.github/workflows/swift-autobuilder-tests.yml

@@ -1,25 +0,0 @@
-name: "Swift: Build and test Xcode autobuilder"
-
-on:
-  pull_request:
-    paths:
-      - "swift/xcode-autobuilder/**"
-      - "misc/bazel/**"
-      - "*.bazel*"
-      - .github/workflows/swift-autobuilder.yml
-    branches:
-      - main
-
-jobs:
-  autobuilder:
-    runs-on: macos-latest
-    steps:
-      - uses: actions/checkout@v3
-      - uses: bazelbuild/setup-bazelisk@v2
-      - uses: actions/setup-python@v3
-      - name: Build the Xcode autobuilder
-        run: |
-          bazel build //swift/xcode-autobuilder
-      - name: Test the Xcode autobuilder
-        run: |
-          bazel test //swift/xcode-autobuilder/tests

.github/workflows/swift-autobuilder.yml

@@ -1,4 +1,4 @@
-name: "Swift: Run Autobuilder Tests"
+name: "Swift: Build and test Xcode autobuilder"
 
 on:
   pull_request:
@@ -11,7 +11,7 @@ on:
       - main
 
 jobs:
-  integration-tests:
+  autobuilder:
     runs-on: macos-latest
     steps:
       - uses: actions/checkout@v3