Remove macro from Objective-C sample file so it parses fully

sample_files/compare.expected

@@ -167,7 +167,7 @@ sample_files/objc_header_before.h sample_files/objc_header_after.h
 f65feb21b25bb7f2ba31ee8f49977193  -
 
 sample_files/objc_module_before.m sample_files/objc_module_after.m
-c04cdebd2da077cf28b53307ad0a3b02  -
+faf4f280485b78d2c74c73292a405708  -
 
 sample_files/ocaml_before.ml sample_files/ocaml_after.ml
 2113c6c7959b8099f678d13953f7f44a  -

sample_files/objc_module_after.m

@@ -159,12 +159,6 @@ const NSArray *expressions=@[@NO, @7, @(YES), @3.15, @(9), @-11, @"Goodbye"];
     [self.listenHandle acceptConnectionInBackgroundAndNotify];
 }
 
-typedef NS_ENUM(NSUInteger, DataOutcome) {
-    DataOutcomeContinue,
-    DataOutcomeClose,
-    DataOutcomeKeepAlive,
-    DataOutcomeUnknown,
-};
 - (void)receiveIncomingDataNotification:(NSNotification *)notification
 {
     NSFileHandle *const connectionHandle=[notification object];

sample_files/objc_module_before.m

@@ -155,11 +155,6 @@ const NSArray *expressions=@[@YES, @6, @(NO), @3.14, @(-9), @-10, @"Hello"];
     [self.listenHandle acceptConnectionInBackgroundAndNotify];
 }
 
-typedef NS_ENUM(NSUInteger, DataOutcome) {
-    DataOutcomeContinue,
-    DataOutcomeClose,
-    DataOutcomeKeepAlive,
-};
 - (void)receiveIncomingDataNotification:(NSNotification *)notification
 {
     NSFileHandle *const connectionHandle=[notification object];