fix(model/user.py): Removed unnecesary methods

model/user.py

@@ -21,12 +21,3 @@ class User:
 
     def toJson(self):
         return {"user": {"id": self.id, "name": self.name, "role": self.role}, "token": self.token}
-
-    def is_admin(self) -> bool:
-        return self.role == 'admin'
-
-    def is_operator(self) -> bool:
-        return self.role == 'operator'
-
-    def is_viewer(self) -> bool:
-        return self.role == 'viewer'