removed nonexistent element "contents"

Author: HugoMario

modules/swagger-codegen/src/main/resources/aspnetcore/2.1/controller.mustache

@@ -20,7 +20,6 @@ namespace {{packageName}}.Controllers
     [ApiController]
     public class {{classname}}Controller : ControllerBase{{#interfaceController}}, I{{classname}}Controller{{/interfaceController}}
     { {{#operation}}
-      {{#contents}}
         /// <summary>
         /// {{#summary}}{{summary}}{{/summary}}
         /// </summary>{{#notes}}
@@ -66,7 +65,6 @@ namespace {{packageName}}.Controllers
             return new ObjectResult(example);{{/returnType}}{{^returnType}}
             throw new NotImplementedException();{{/returnType}}
         }
-        {{/contents}}
         {{/operation}}
     }
 {{/operations}}