chore: remove obsolete build workflow file

.gitea/workflows/build.yml

@@ -1,30 +0,0 @@
-name: Build
-
-on:
-  push:
-    branches:
-      - master
-  pull_request:
-    types: [opened, synchronize, reopened]
-
-jobs:
-  build:
-    name: Build and analyze
-    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.
-      # We do not recommend to use this in a pull request. Prefer using pull request
-      # decoration instead.
-      # - uses: sonarsource/sonarqube-quality-gate-action@master
-      #   timeout-minutes: 5
-      #   env:
-      #     SONAR_TOKEN: ${{ secrets.SONAR_TOKEN }}