[iOS Example] Remove deprecated method call

`PTAppDelegate` doesn't need to set the status bar style anymore.

Removes a deprecation warning.

Author: jonathandann

Peertalk iOS Example/PTAppDelegate.m

@@ -7,15 +7,4 @@ @implementation PTAppDelegate
 
 @synthesize window = window_;
 
-
-- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions {
-  [[UIApplication sharedApplication] setStatusBarStyle:UIStatusBarStyleBlackOpaque animated:NO];
-  return YES;
-}
-
-
-//- (void)applicationWillTerminate:(UIApplication *)application {
-//}
-
-
 @end