decorators deprecated apply_defaults removal (apache#41579)

* decorators deprecated apply_defaults removal

* news fragment added

airflow/sensors/base.py

@@ -45,11 +45,6 @@
 from airflow.models.taskreschedule import TaskReschedule
 from airflow.ti_deps.deps.ready_to_reschedule import ReadyToRescheduleDep
 from airflow.utils import timezone
-
-# We need to keep the import here because GCSToLocalFilesystemOperator released in
-# Google Provider before 3.0.0 imported apply_defaults from here.
-# See  https://github.com/apache/airflow/issues/16035
-from airflow.utils.decorators import apply_defaults  # noqa: F401
 from airflow.utils.session import NEW_SESSION, provide_session
 
 if TYPE_CHECKING:

airflow/utils/decorators.py

@@ -18,44 +18,12 @@
 from __future__ import annotations
 
 import sys
-import warnings
 from collections import deque
-from functools import wraps
-from typing import Callable, TypeVar, cast
-
-from airflow.exceptions import RemovedInAirflow3Warning
+from typing import Callable, TypeVar
 
 T = TypeVar("T", bound=Callable)
 
 
-def apply_defaults(func: T) -> T:
-    """
-    Use apply_default decorator for the `default_args` feature to work properly; deprecated.
-
-    In previous versions, all subclasses of BaseOperator must use apply_default decorator for the"
-    `default_args` feature to work properly.
-
-    In current version, it is optional. The decorator is applied automatically using the metaclass.
-    """
-    warnings.warn(
-        "This decorator is deprecated. \n"
-        "\n"
-        "In previous versions, all subclasses of BaseOperator must use apply_default decorator for the "
-        "`default_args` feature to work properly.\n"
-        "\n"
-        "In current version, it is optional. The decorator is applied automatically using the metaclass.\n",
-        RemovedInAirflow3Warning,
-        stacklevel=3,
-    )
-
-    # Make it still be a wrapper to keep the previous behaviour of an extra stack frame
-    @wraps(func)
-    def wrapper(*args, **kwargs):
-        return func(*args, **kwargs)
-
-    return cast(T, wrapper)
-
-
 def remove_task_decorator(python_source: str, task_decorator_name: str) -> str:
     """
     Remove @task or similar decorators as well as @setup and @teardown.

newsfragments/41579.significant.rst

@@ -0,0 +1 @@
+Removed deprecated ``apply_defaults`` function from ``airflow/utils/decorators.py``.