Fix CI workflow (opea-project#1518)

Signed-off-by: chensuyue <[email protected]>

Author: chensuyue

.github/workflows/pr-microservice-test.yml

@@ -64,10 +64,6 @@ jobs:
           role-to-assume: ${{ secrets.AWS_IAM_ROLE_ARN }}
           aws-region: us-east-1
 
-      - name: Set Memory Map Limit
-        if: ${{ contains(matrix.service, "opensearch") }}
-        run: sudo sysctl -w vm.max_map_count=262144
-
       - name: Run microservice test
         env:
           HF_TOKEN: ${{ secrets.HF_TOKEN }}