Remove trailing whitespace in the iOS codec unittest files

test/build/ios/codec_unittest/codec_unittest/AppDelegate.m

@@ -23,7 +23,7 @@
 
 - (void)applicationDidEnterBackground:(UIApplication *)application
 {
-    // Use this method to release shared resources, save user data, invalidate timers, and store enough application state information to restore your application to its current state in case it is terminated later. 
+    // Use this method to release shared resources, save user data, invalidate timers, and store enough application state information to restore your application to its current state in case it is terminated later.
     // If your application supports background execution, this method is called instead of applicationWillTerminate: when the user quits.
 }
 

test/build/ios/codec_unittest/codec_unittest/main.m

@@ -62,9 +62,9 @@ int main(int argc, char * argv[])
     else
         NSLog(@"Unit test runing failed on devices");
     abort();
-    
+
 #endif
-    
+
     @autoreleasepool {
         return UIApplicationMain(argc, argv, nil, NSStringFromClass([AppDelegate class]));
     }