chore(endpoints): delete region 'swagger' in endpoints/multiple-versions (#9857)

* chore(endpoints): delete region swagger to openapi-v1.yaml

* chore(endpoints): delete region swagger to openapi-v2.yaml

Author: eapl-gemugami

endpoints/multiple-versions/openapi-v1.yaml

@@ -12,14 +12,12 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 
-# [START swagger]
 swagger: "2.0"
 info:
   description: "A simple Google Cloud Endpoints API example."
   title: "Endpoints Example"
   version: "1.0.0"
 host: "echo-api.endpoints.YOUR-PROJECT-ID.cloud.goog"
-# [END swagger]
 basePath: "/v1"
 consumes:
   - "application/json"

endpoints/multiple-versions/openapi-v2.yaml

@@ -12,14 +12,12 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 
-# [START swagger]
 swagger: "2.0"
 info:
   description: "A simple Google Cloud Endpoints API example."
   title: "Endpoints Example"
   version: "2.0.0"
 host: "echo-api.endpoints.YOUR-PROJECT-ID.cloud.goog"
-# [END swagger]
 basePath: "/v2"
 consumes:
   - "application/json"