Cleanup the useDebouncedEffect experiment

Summary:
This diff cleans up the `use_debounced_effects_for_animated` experiment. It is not shipped because it breaks semantics of Animated.

It also removes the implementation of now unused `useDebouncedEffect` hook.

bypass-github-export-checks

Facebook
Details here https://fb.workplace.com/groups/3611662615830335/permalink/3666119690384627/

Changelog: [Internal]

Reviewed By: bvanderhoof

Differential Revision: D62188361

fbshipit-source-id: ce215cf7dd57e41e02c33760e91808d774bbd919

packages/react-native/Libraries/Animated/useAnimatedProps.js

@@ -13,7 +13,6 @@
 import type {EventSubscription} from '../EventEmitter/NativeEventEmitter';
 
 import * as ReactNativeFeatureFlags from '../../src/private/featureflags/ReactNativeFeatureFlags';
-import useDebouncedEffect from '../../src/private/hooks/useDebouncedEffect';
 import {isPublicInstance as isFabricPublicInstance} from '../ReactNative/ReactFabricPublicInstance/ReactFabricPublicInstanceUtils';
 import useRefEffect from '../Utilities/useRefEffect';
 import {AnimatedEvent} from './AnimatedEvent';
@@ -323,12 +322,7 @@ function useAnimatedPropsLifecycle_passiveEffects(node: AnimatedProps): void {
     };
   }, []);
 
-  const useEffectImpl =
-    ReactNativeFeatureFlags.shouldUseDebouncedEffectsForAnimated()
-      ? useDebouncedEffect
-      : useEffect;
-
-  useEffectImpl(() => {
+  useEffect(() => {
     node.__attach();
     let drivenAnimationEndedListener: ?EventSubscription = null;
 

packages/react-native/scripts/featureflags/ReactNativeFeatureFlags.config.js

@@ -309,11 +309,6 @@ const definitions: FeatureFlagDefinitions = {
       description:
         'Enables use of AnimatedObject for animating transform values.',
     },
-    shouldUseDebouncedEffectsForAnimated: {
-      defaultValue: false,
-      description:
-        'Use new `useDebouncedEffects` hook for manging animated props lifecycle.',
-    },
     shouldUseRemoveClippedSubviewsAsDefaultOnIOS: {
       defaultValue: false,
       description:

packages/react-native/src/private/featureflags/ReactNativeFeatureFlags.js

@@ -4,7 +4,7 @@
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
  *
- * @generated SignedSource<<3693bce1a6719ef03c1c3148230771b4>>
+ * @generated SignedSource<<0bff47ec5af8ed96d8b2abe351f318f1>>
  * @flow strict-local
  */
 
@@ -34,7 +34,6 @@ export type ReactNativeFeatureFlagsJsOnly = {
   isLayoutAnimationEnabled: Getter<boolean>,
   shouldSkipStateUpdatesForLoopingAnimations: Getter<boolean>,
   shouldUseAnimatedObjectForTransform: Getter<boolean>,
-  shouldUseDebouncedEffectsForAnimated: Getter<boolean>,
   shouldUseRemoveClippedSubviewsAsDefaultOnIOS: Getter<boolean>,
   shouldUseSetNativePropsInFabric: Getter<boolean>,
   shouldUseSetNativePropsInNativeAnimationsInFabric: Getter<boolean>,
@@ -136,11 +135,6 @@ export const shouldSkipStateUpdatesForLoopingAnimations: Getter<boolean> = creat
  */
 export const shouldUseAnimatedObjectForTransform: Getter<boolean> = createJavaScriptFlagGetter('shouldUseAnimatedObjectForTransform', false);
 
-/**
- * Use new `useDebouncedEffects` hook for manging animated props lifecycle.
- */
-export const shouldUseDebouncedEffectsForAnimated: Getter<boolean> = createJavaScriptFlagGetter('shouldUseDebouncedEffectsForAnimated', false);
-
 /**
  * removeClippedSubviews prop will be used as the default in FlatList on iOS to match Android
  */