Remove customDirectEventTypes

Summary: This method has been deprecated for a while and there are no internal use-cases left (customBubblingEventTypes is still used by RCTViewManager though).

Reviewed By: fkgozali

Differential Revision: D4083327

fbshipit-source-id: 261e0dce3b41714d13b46d146f87fc415eb9e817

Examples/UIExplorer/UIExplorerUnitTests/RCTModuleInitNotificationRaceTests.m

@@ -45,7 +45,7 @@ RCT_EXPORT_MODULE()
 #pragma clang diagnostic push
 #pragma clang diagnostic ignored "-Wdeprecated-implementations"
 
-- (NSArray<NSString *> *)customDirectEventTypes
+- (NSArray<NSString *> *)customBubblingEventTypes
 {
   return @[@"foo"];
 }