adjust CI

Author: MikeMirzayanov

.github/workflows/ci.yml

@@ -26,20 +26,6 @@ jobs:
         run: |
           cd code
           mvn --batch-mode install
-      - name: Test Demo
-        run: |
-          cd demo
-          mvn --batch-mode test
-    services:
-      mariadb:
-        image: mariadb
-        ports:
-          - 3307:3306
-        env:
-          MARIADB_DATABASE: jacuzzi
-          MARIADB_USER: jacuzzi
-          MARIADB_PASSWORD: jacuzzi
-          MARIADB_RANDOM_ROOT_PASSWORD: true
   deploy:
     if: github.ref == 'refs/heads/master' && github.repository_owner == 'Codeforces'
     needs: test
@@ -56,4 +42,4 @@ jobs:
       - name: Deploy
         run: |
           cd code
-          mvn --batch-mode deploy -DskipTests
+          mvn --batch-mode deploy