Fix Delete Firewall and Delete Firwall Device response

This also fixes CLI build error.

Author: leslitagordita

openapi.yaml

@@ -9206,6 +9206,10 @@ paths:
       responses:
         '200':
           description: Delete Successful.
+          content:
+            application/json:
+              schema:
+                type: object
         default:
           $ref: '#/components/responses/ErrorResponse'
       x-code-samples:
@@ -9419,6 +9423,10 @@ paths:
       responses:
         '200':
           description: Delete Successful.
+          content:
+            application/json:
+              schema:
+                type: object
         default:
           $ref: '#/components/responses/ErrorResponse'
       x-code-samples: