Remove now-unneeded type: ignore comment

src/safir/asyncio.py

@@ -123,7 +123,7 @@ async def iterator() -> AsyncIterator[T]:
                         for item in contents[position:end]:
                             if item is Ellipsis:
                                 return
-                            yield item  # type: ignore[misc]
+                            yield item
                         position = end
                     elif contents and contents[-1] is Ellipsis:
                         return