fix: remove unexisting interface

Author: Minishlink

ios/CodePush/CodePush.h

@@ -63,12 +63,6 @@
 + (BOOL)isFailedHash:(NSString*)packageHash;
 
 
-/*
- * This method is used to get information about the latest rollback.
- * This information will be used to decide whether the application
- * should ignore the update or not.
- */
-+ (NSDictionary*)getRollbackInfo;
 /*
  * This method is used to save information about the latest rollback.
  * This information will be used to decide whether the application