.github: move signed-off check into main xserver build workflow

Reduce the number of total workflows, so the list isn't so crowded.

Signed-off-by: Enrico Weigelt, metux IT consult <info@metux.net>
Signed-off-by: artist <artist@artixlinux.org>

.github/workflows/build-xserver.yml

@@ -323,6 +323,18 @@ jobs:
             - run: |
                   bash ./.github/scripts/Cygwin/build.sh
 
+    check-sign-off:
+        name: Write comment if unsigned commits found
+        if: github.event_name == 'pull_request'
+        runs-on: ubuntu-latest
+        env:
+            FORCE_COLOR: 1
+            runs-on: ubuntu-latest
+        steps:
+          - uses: live627/check-pr-signoff-action@v1
+            with:
+                token: ${{ secrets.GITHUB_TOKEN }}
+
     release:
         name: Release pushed tag
         runs-on: ubuntu-latest
@@ -336,6 +348,7 @@ jobs:
             - xserver-build-dragonflybsd
             - xserver-build-netbsd
             - xserver-build-cygwin
+            - check-sign-off
         steps:
             - name: Checkout
               uses: actions/checkout@v4

.github/workflows/pr-signoff-check.yml

@@ -1,15 +0,0 @@
-name: Check PR Sign-off
-
-on: [pull_request]
-
-jobs:
-  check-sign-off:
-    name: Write comment if unsigned commits found
-    env:
-      FORCE_COLOR: 1
-    runs-on: ubuntu-latest
-
-    steps:
-      - uses: live627/check-pr-signoff-action@v1
-        with:
-          token: ${{ secrets.GITHUB_TOKEN }}