staticmethod function has no self

src/risotto/controller.py

@@ -65,8 +65,7 @@ class Controller:
                                  )
 
     @staticmethod
-    async def check_role(self,
-                         uri: str,
+    async def check_role(uri: str,
                          username: str,
                          **kwargs: dict,
                          ) -> None: