Remove NIO from VPCS

gns3server/web/route.py

@@ -70,6 +70,10 @@ class Route(object):
     def put(cls, path, *args, **kw):
         return cls._route('PUT', path, *args, **kw)
 
+    @classmethod
+    def delete(cls, path, *args, **kw):
+        return cls._route('DELETE', path, *args, **kw)
+
     @classmethod
     def _route(cls, method, path, *args, **kw):
         # This block is executed only the first time