ios/demo: remove unused protocol

ios/IJKMediaDemo/IJKMediaDemo/IJKMoviePlayerViewController.h

@@ -18,7 +18,7 @@
 #import <IJKMediaFramework/IJKMediaFramework.h>
 @class IJKMediaControl;
 
-@interface IJKVideoViewController : UIViewController <IJKMediaUrlOpenDelegate>
+@interface IJKVideoViewController : UIViewController
 
 @property(atomic,strong) NSURL *url;
 @property(atomic, retain) id<IJKMediaPlayback> player;

ios/IJKMediaDemo/IJKMediaDemo/IJKMoviePlayerViewController.m

@@ -82,7 +82,6 @@
     self.player.shouldAutoplay = YES;
 
     IJKFFMoviePlayerController *ffp = self.player;
-    ffp.httpOpenDelegate = self;
 
     self.view.autoresizesSubviews = YES;
     [self.view addSubview:self.player.view];
@@ -91,11 +90,6 @@
     self.mediaControl.delegatePlayer = self.player;
 }
 
-- (BOOL)willOpenUrl:(IJKMediaUrlOpenData*) urlOpenData
-{
-    return YES;
-}
-
 - (void)viewWillAppear:(BOOL)animated {
     [super viewWillAppear:animated];