Deprecate UIManagerModule.removeSubviewsFromContainerWithID

Summary:
The method UIManagerModule.removeSubviewsFromContainerWithID will not be part of fabric. This diff deprecates it to avoid future usage before the migration.
This can not be removed, as it is currently used from React-VR

Reviewed By: shergin

Differential Revision: D16420687

fbshipit-source-id: a06810cabb434e35e5a371444114db2633a35a29

Author: mdvacca

React/Modules/RCTUIManager.m

@@ -670,6 +670,7 @@ - (RCTViewManagerUIBlock)uiBlockWithLayoutUpdateForRootView:(RCTRootShadowView *
  */
 RCT_EXPORT_METHOD(removeSubviewsFromContainerWithID:(nonnull NSNumber *)containerID)
 {
+  RCTLogWarn(@"RCTUIManager.removeSubviewsFromContainerWithID method is deprecated and it will not be implemented in newer versions of RN (Fabric) - T47686450");
   id<RCTComponent> container = _shadowViewRegistry[containerID];
   RCTAssert(container != nil, @"container view (for ID %@) not found", containerID);
 

ReactAndroid/src/main/java/com/facebook/react/uimanager/UIManagerModule.java

@@ -558,8 +558,10 @@ public void replaceExistingNonRootView(int oldTag, int newTag) {
    * receipt. TODO: The method name is incorrect and will be renamed, #6033872
    *
    * @param containerTag the tag of the container for which the subviews must be removed
+   * @deprecated This method will not be available in Fabric UIManager.
    */
   @ReactMethod
+  @Deprecated
   public void removeSubviewsFromContainerWithID(int containerTag) {
     mUIImplementation.removeSubviewsFromContainerWithID(containerTag);
   }