[RCTShadowView isHidden] was removed

Summary:
It's unused.
Use `display` prop instead to control visiblity of the view.

Reviewed By: fkgozali

Differential Revision: D6888104

fbshipit-source-id: dd37a365033ec36bdfcfa305ec6a965a10dec2cd

Author: shergin

React/Modules/RCTUIManager.m

@@ -496,7 +496,6 @@ - (RCTViewManagerUIBlock)uiBlockWithLayoutUpdateForRootView:(RCTRootShadowView *
     UIUserInterfaceLayoutDirection layoutDirection;
     BOOL isNew;
     BOOL parentIsNew;
-    BOOL isHidden;
   } RCTFrameData;
 
   // Construct arrays then hand off to main thread
@@ -513,7 +512,6 @@ - (RCTViewManagerUIBlock)uiBlockWithLayoutUpdateForRootView:(RCTRootShadowView *
         shadowView.layoutDirection,
         shadowView.isNewView,
         shadowView.superview.isNewView,
-        shadowView.isHidden,
       };
     }
   }
@@ -570,7 +568,6 @@ - (RCTViewManagerUIBlock)uiBlockWithLayoutUpdateForRootView:(RCTRootShadowView *
       UIView *view = viewRegistry[reactTag];
       CGRect frame = frameData.frame;
 
-      BOOL isHidden = frameData.isHidden;
       UIUserInterfaceLayoutDirection layoutDirection = frameData.layoutDirection;
       BOOL isNew = frameData.isNew;
       RCTLayoutAnimation *updatingLayoutAnimation = isNew ? nil : layoutAnimationGroup.updatingLayoutAnimation;
@@ -588,10 +585,6 @@ - (RCTViewManagerUIBlock)uiBlockWithLayoutUpdateForRootView:(RCTRootShadowView *
         }
       };
 
-      if (view.isHidden != isHidden) {
-        view.hidden = isHidden;
-      }
-
       if (view.reactLayoutDirection != layoutDirection) {
         view.reactLayoutDirection = layoutDirection;
       }

React/Views/RCTShadowView.h

@@ -70,12 +70,6 @@ typedef void (^RCTApplierBlock)(NSDictionary<NSNumber *, UIView *> *viewRegistry
  */
 @property (nonatomic, assign, getter=isNewView) BOOL newView;
 
-/**
- * isHidden - RCTUIManager uses this to determine whether or not the UIView should be hidden. Useful if the
- * ShadowView determines that its UIView will be clipped and wants to hide it.
- */
-@property (nonatomic, assign, getter=isHidden) BOOL hidden;
-
 /**
  * Computed layout direction of the view.
  */