Mypy error -- can't have a bare tuple

So you don't even get that typing.

Author: wiredfool

src/PIL/Image.py

@@ -3219,7 +3219,7 @@ class SupportsArrowArrayInterface(Protocol):
     #     raise NotImplementedError()
 
     # old not typed definition.
-    def __arrow_c_array__(self, requested_schema = None) -> tuple:
+    def __arrow_c_array__(self, requested_schema = None):
         raise NotImplementedError()