remove dead code

Summary: This property is now in the bridge.

Reviewed By: tadeuzagallo

Differential Revision: D2985894

fb-gh-sync-id: 38821e0c5998bc96fc8f6164fbbc82c721f5c5ad
shipit-source-id: 38821e0c5998bc96fc8f6164fbbc82c721f5c5ad

Author: mhorowitz

React/Base/RCTRootView.h

@@ -83,13 +83,6 @@ extern NSString *const RCTContentDidAppearNotification;
  */
 @property (nonatomic, copy, readwrite) NSDictionary *appProperties;
 
-/**
- * The class of the RCTJavaScriptExecutor to use with this view.
- * If not specified, it will default to using RCTJSCExecutor.
- * Changes will take effect next time the bundle is reloaded.
- */
-@property (nonatomic, strong) Class executorClass;
-
 /**
  * The size flexibility mode of the root view.
  */