fix: disable PostgreSQL TLS for refusing RDS endpoint

deploy/ack/go-api.yaml

@@ -63,9 +63,6 @@ spec:
                   name: zhinian-go-bootstrap
                   key: ZHINIAN_BOOTSTRAP_ADMIN_PASSWORD
           volumeMounts:
-            - name: rds-ca
-              mountPath: /etc/zhinian/rds
-              readOnly: true
             - name: data
               mountPath: /var/lib/zhinian
             - name: tmp
@@ -106,9 +103,6 @@ spec:
             runAsGroup: 10001
             readOnlyRootFilesystem: true
       volumes:
-        - name: rds-ca
-          secret:
-            secretName: zhinian-rds-ca
         - name: data
           emptyDir: {}
         - name: tmp