Back out "Fixed scrollview inset when RN view is embedded in another view"

Summary:
Original commit changeset: fbd72739fb71

Changelog: Back out "[react-native][PR] Fixed scrollview inset when RN view is embedded in another view"

Reviewed By: TheSavior

Differential Revision: D20878607

fbshipit-source-id: 0d77b9fb08c637f7894c399a219a242e472b0700

Author: Xiaoyu Yin

Libraries/Components/Keyboard/KeyboardAvoidingView.js

@@ -118,28 +118,7 @@ class KeyboardAvoidingView extends React.Component<Props, State> {
 
   _onLayout = (event: ViewLayoutEvent) => {
     this._frame = event.nativeEvent.layout;
-
-    let isInitial = !this._initialFrameHeight;
-
-    if (this.viewRef.current !== null) {
-      // Try to measure inside the window, not the view controller
-      this.viewRef.current.measureInWindow((x, y, width, height) => {
-        const frame: ViewLayout = {
-          x: x,
-          y: y,
-          width: width,
-          height: height,
-        };
-        this._frame = frame;
-
-        if (isInitial) {
-          // save the initial frame height, before the keyboard is visible
-          this._initialFrameHeight = frame.height;
-        }
-      });
-    }
-
-    if (isInitial) {
+    if (!this._initialFrameHeight) {
       // save the initial frame height, before the keyboard is visible
       this._initialFrameHeight = this._frame.height;
     }