Type-hint fixes

Author: rhshadrach

pandas/core/arrays/masked.py

@@ -1840,10 +1840,10 @@ def all(
  result = maybe_unbox_numpy_scalar(values.all(axis=axis))
 
  if skipna:
- return result # type: ignore[return-value]
+ return result
  else:
  if not result or len(self) == 0 or not self._mask.any():
- return result # type: ignore[return-value]
+ return result
  else:
  return self.dtype.na_value