Remove redundant check for positional arguments

This was missed in the refactor: #19965 -- since the `task_decorator_factory` enforces keyword-only parameters for via the `*` in its signature.

airflow/decorators/base.py

@@ -684,8 +684,6 @@ def task_decorator_factory(
             kwargs=kwargs,
         )
         return cast(TaskDecorator, decorator)
-    elif python_callable is not None:
-        raise TypeError("No args allowed while using @task, use kwargs instead")
 
     def decorator_factory(python_callable):
         return _TaskDecorator(