fix: remove unnecessary pulling in workflow

.github/workflows/ci_cd.yml

@@ -30,9 +30,6 @@ jobs:
       - name: Checkout Code
         uses: actions/checkout@v3
 
-      - name: Pull Test Environment Images
-        run: docker-compose -f docker-compose.testing.yml pull db-test
-
       - name: Build Test Environment, Stage 1
         run: docker-compose -f docker-compose.testing.yml build base backend app-test