remove sonarcloud again

.github/workflows/sonarcloud.yml

@@ -1,48 +0,0 @@
-name: sonarcloud
-on:
-  push:
-    branches:
-      - master
-  pull_request:
-    types: [opened, synchronize, reopened]
-jobs:
-  build:
-    name: Build
-    runs-on: ubuntu-latest
-    env:
-      SONAR_SCANNER_VERSION: 4.7.0.2747
-      SONAR_SERVER_URL: "https://sonarcloud.io"
-      BUILD_WRAPPER_OUT_DIR: build_wrapper_output_directory # Directory where build-wrapper output will be placed
-    steps:
-      - uses: actions/checkout@v2
-        with:
-          fetch-depth: 0  # Shallow clones should be disabled for a better relevancy of analysis
-      - name: Set up JDK 11
-        uses: actions/setup-java@v1
-        with:
-          java-version: 11
-      - name: Download and set up sonar-scanner
-        env:
-          SONAR_SCANNER_DOWNLOAD_URL: https://binaries.sonarsource.com/Distribution/sonar-scanner-cli/sonar-scanner-cli-${{ env.SONAR_SCANNER_VERSION }}-linux.zip
-        run: |
-          mkdir -p $HOME/.sonar
-          curl -sSLo $HOME/.sonar/sonar-scanner.zip ${{ env.SONAR_SCANNER_DOWNLOAD_URL }} 
-          unzip -o $HOME/.sonar/sonar-scanner.zip -d $HOME/.sonar/
-          echo "$HOME/.sonar/sonar-scanner-${{ env.SONAR_SCANNER_VERSION }}-linux/bin" >> $GITHUB_PATH
-      - name: Download and set up build-wrapper
-        env:
-          BUILD_WRAPPER_DOWNLOAD_URL: ${{ env.SONAR_SERVER_URL }}/static/cpp/build-wrapper-linux-x86.zip
-        run: |
-          curl -sSLo $HOME/.sonar/build-wrapper-linux-x86.zip ${{ env.BUILD_WRAPPER_DOWNLOAD_URL }}
-          unzip -o $HOME/.sonar/build-wrapper-linux-x86.zip -d $HOME/.sonar/
-          echo "$HOME/.sonar/build-wrapper-linux-x86" >> $GITHUB_PATH
-      - name: Run build-wrapper
-        run: |
-          build-wrapper-linux-x86-64 --out-dir ${{ env.BUILD_WRAPPER_OUT_DIR }} make
-      - name: Run sonar-scanner
-        env:
-          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
-          SONAR_TOKEN: ${{ secrets.SONAR_TOKEN }}
-        run: |
-          sonar-scanner --define sonar.host.url="${{ env.SONAR_SERVER_URL }}" --define sonar.cfamily.build-wrapper-output="${{ env.BUILD_WRAPPER_OUT_DIR }}"
-