ios/demo: remove unused code

ios/IJKMediaDemo/IJKMediaDemo/IJKMoviePlayerViewController.m

@@ -73,7 +73,6 @@
     // [IJKFFMoviePlayerController checkIfPlayerVersionMatch:YES major:1 minor:0 micro:0];
 
     IJKFFOptions *options = [IJKFFOptions optionsByDefault];
-    [options setFormatOptionValue:@"ijktcphook" forKey:@"http-tcp-hook"];
 
     self.player = [[IJKFFMoviePlayerController alloc] initWithContentURL:self.url withOptions:options];
     self.player.view.autoresizingMask = UIViewAutoresizingFlexibleWidth|UIViewAutoresizingFlexibleHeight;
@@ -81,8 +80,6 @@
     self.player.scalingMode = IJKMPMovieScalingModeAspectFit;
     self.player.shouldAutoplay = YES;
 
-    IJKFFMoviePlayerController *ffp = self.player;
-
     self.view.autoresizesSubviews = YES;
     [self.view addSubview:self.player.view];
     [self.view addSubview:self.mediaControl];