[Flare] Remove dead event target code (facebook#16063)

Author: trueadm

packages/react-art/src/ReactARTHostConfig.js

@@ -444,28 +444,3 @@ export function unmountEventComponent(
 ): void {
   throw new Error('Not yet implemented.');
 }
-
-export function getEventTargetChildElement(
-  type: Symbol | number,
-  props: Props,
-): null {
-  throw new Error('Not yet implemented.');
-}
-
-export function handleEventTarget(
-  type: Symbol | number,
-  props: Props,
-  rootContainerInstance: Container,
-  internalInstanceHandle: Object,
-): boolean {
-  throw new Error('Not yet implemented.');
-}
-
-export function commitEventTarget(
-  type: Symbol | number,
-  props: Props,
-  instance: Instance,
-  parentInstance: Instance,
-): void {
-  throw new Error('Not yet implemented.');
-}

packages/react-native-renderer/src/ReactFabricHostConfig.js

@@ -474,28 +474,3 @@ export function unmountEventComponent(
     unmountEventResponder(eventComponentInstance);
   }
 }
-
-export function getEventTargetChildElement(
-  type: Symbol | number,
-  props: Props,
-): null {
-  throw new Error('Not yet implemented.');
-}
-
-export function handleEventTarget(
-  type: Symbol | number,
-  props: Props,
-  rootContainerInstance: Container,
-  internalInstanceHandle: Object,
-): boolean {
-  throw new Error('Not yet implemented.');
-}
-
-export function commitEventTarget(
-  type: Symbol | number,
-  props: Props,
-  instance: Instance,
-  parentInstance: Instance,
-): void {
-  throw new Error('Not yet implemented.');
-}

packages/react-native-renderer/src/ReactNativeHostConfig.js

@@ -513,28 +513,3 @@ export function unmountEventComponent(
 ): void {
   throw new Error('Not yet implemented.');
 }
-
-export function getEventTargetChildElement(
-  type: Symbol | number,
-  props: Props,
-): null {
-  throw new Error('Not yet implemented.');
-}
-
-export function handleEventTarget(
-  type: Symbol | number,
-  props: Props,
-  rootContainerInstance: Container,
-  internalInstanceHandle: Object,
-): boolean {
-  throw new Error('Not yet implemented.');
-}
-
-export function commitEventTarget(
-  type: Symbol | number,
-  props: Props,
-  instance: Instance,
-  parentInstance: Instance,
-): void {
-  throw new Error('Not yet implemented.');
-}

packages/react-reconciler/src/forks/ReactFiberHostConfig.custom.js

@@ -66,8 +66,6 @@ export const supportsHydration = $$$hostConfig.supportsHydration;
 export const mountEventComponent = $$$hostConfig.mountEventComponent;
 export const updateEventComponent = $$$hostConfig.updateEventComponent;
 export const handleEventTarget = $$$hostConfig.handleEventTarget;
-export const getEventTargetChildElement =
-  $$$hostConfig.getEventTargetChildElement;
 
 // -------------------
 //      Mutation

packages/shared/ReactTypes.js

@@ -14,8 +14,7 @@ export type ReactNode =
   | ReactFragment
   | ReactProvider<any>
   | ReactConsumer<any>
-  | ReactEventComponent<any, any, any>
-  | ReactEventTarget;
+  | ReactEventComponent<any, any, any>;
 
 export type ReactEmpty = null | void | boolean;
 
@@ -111,12 +110,6 @@ export type ReactEventComponent<T, E, C> = {|
   responder: ReactEventResponder<T, E, C>,
 |};
 
-export type ReactEventTarget = {|
-  $$typeof: Symbol | number,
-  displayName?: string,
-  type: Symbol | number,
-|};
-
 export opaque type EventPriority = 0 | 1 | 2;
 
 export const DiscreteEvent: EventPriority = 0;