remove redundant check for typeguard and typeis

Author: sloboegen

mypy/constraints.py

@@ -1029,14 +1029,10 @@ def visit_callable_type(self, template: CallableType) -> list[Constraint]:
             if template.type_guard is not None and cactual.type_guard is not None:
                 template_ret_type = template.type_guard
                 cactual_ret_type = cactual.type_guard
-            elif template.type_guard is not None:
-                template_ret_type = AnyType(TypeOfAny.special_form)
 
             if template.type_is is not None and cactual.type_is is not None:
                 template_ret_type = template.type_is
                 cactual_ret_type = cactual.type_is
-            elif template.type_is is not None:
-                template_ret_type = AnyType(TypeOfAny.special_form)
 
             res.extend(infer_constraints(template_ret_type, cactual_ret_type, self.direction))