Remove @override annotations (#14806)

stubs/tensorflow/tensorflow/keras/layers/__init__.pyi

@@ -395,7 +395,6 @@ class MultiHeadAttention(Layer[Any, tf.Tensor]):
         autocast: bool = True,
         name: str | None = None,
     ) -> None: ...
-    # @override
     @overload  # type: ignore[override]
     def __call__(
         self,

stubs/tensorflow/tensorflow/keras/metrics.pyi

@@ -1,7 +1,7 @@
 from abc import ABCMeta, abstractmethod
 from collections.abc import Callable, Iterable, Sequence
 from typing import Any, Literal
-from typing_extensions import Self, TypeAlias, override
+from typing_extensions import Self, TypeAlias
 
 import tensorflow as tf
 from tensorflow import Operation, Tensor
@@ -21,7 +21,6 @@ class Metric(tf.keras.layers.Layer[tf.Tensor, tf.Tensor], metaclass=ABCMeta):
     @abstractmethod
     def result(self) -> _Output: ...
     # Metric inherits from keras.Layer, but its add_weight method is incompatible with the one from "Layer".
-    @override
     def add_weight(  # type: ignore[override]
         self,
         name: str,