don't run sonarqube on older branches

.github/workflows/build.yml

@@ -32,21 +32,3 @@ jobs:
       - name: Build with extra cythonization
         run: |
           python ./setup.py build --with-cythonize_more
-
-  sonarqube:
-    name: Sonarqube
-    runs-on: ubuntu-latest
-    steps:
-      - uses: actions/checkout@v4
-        with:
-          fetch-depth: 0  # Shallow clones should be disabled for a better relevancy of analysis
-      - uses: sonarsource/sonarqube-scan-action@master
-        env:
-          SONAR_TOKEN: ${{ secrets.SONAR_TOKEN }}
-          SONAR_HOST_URL: ${{ secrets.SONAR_HOST_URL }}
-      # If you wish to fail your job when the Quality Gate is red, uncomment the
-      # following lines. This would typically be used to fail a deployment.
-      # - uses: sonarsource/sonarqube-quality-gate-action@master
-      #   timeout-minutes: 5
-      #   env:
-      #     SONAR_TOKEN: ${{ secrets.SONAR_TOKEN }}