Removed ninja-build installation from semaphore.yml

Author: DenBond7

.semaphore/semaphore.yml

@@ -58,8 +58,6 @@ global_job_config:
       - cache restore gradle-cache-$GRADLE_SUM
       # Install Android dependencies if needed
       - ./script/ci-install-android-sdk.sh
-      # Install ninja
-      - sudo apt install -y ninja-build
 blocks:
   - name: 'Build'
     execution_time_limit: