TYP: run mypy in strict mode

Author: jorenham

numpy/typing/tests/data/mypy.ini

@@ -1,9 +1,8 @@
 [mypy]
+strict = True
 enable_error_code = deprecated, ignore-without-code, truthy-bool
-strict_bytes = True
-warn_unused_ignores = True
-implicit_reexport = False
 disallow_any_unimported = True
-disallow_any_generics = True
+allow_redefinition_new = True
+local_partial_types = True
 show_absolute_path = True
 pretty = True