title: Admob banner not getting remove from superview
body: <p>I am developing one 2d game using cocos2d framework, in this game i am using admob for advertising, in some classes not in all classes but admob banner is visible in every class and after some time game getting crash also.</p>
  
  <p>I am not getting how admob banner is comes in every class in fact i have not declare in Rootviewcontroller class. can any one suggest me how to integrate Admob in cocos2d game, i want Admob banner in particular classes not in every class,
  I am using latest google admob sdk, my code is below:</p>
  
  <p>Thanks in advance</p>
  
  <p>`  </p>
  
  <pre><code>-(void)AdMob{
  NSLog(@"ADMOB");
  
  
  CGSize winSize = [[CCDirector sharedDirector]winSize];
  // Create a view of the standard size at the bottom of the screen.
  
  
  if (UI_USER_INTERFACE_IDIOM() == UIUserInterfaceIdiomPad){
  
      bannerView_ = [[GADBannerView alloc]
                    initWithFrame:CGRectMake(size.width/2-364,
                                             size.height -
                                             GAD_SIZE_728x90.height,
                                             GAD_SIZE_728x90.width,
                                             GAD_SIZE_728x90.height)];
  
  }
  else { // It's an iPhone
  
      bannerView_ = [[GADBannerView alloc]
                    initWithFrame:CGRectMake(size.width/2-160,
                                             size.height -
                                             GAD_SIZE_320x50.height,
                                             GAD_SIZE_320x50.width,
                                             GAD_SIZE_320x50.height)];
  }
  
  
  
  
  if (UI_USER_INTERFACE_IDIOM() == UIUserInterfaceIdiomPad)
  {
      bannerView_.adUnitID =@"a15062384653c9e";
  }
  else {
      bannerView_.adUnitID =@"a15062392a0aa0a";
  }
  
  bannerView_.rootViewController = self;
  [[[CCDirector sharedDirector]openGLView]addSubview:bannerView_];
  [bannerView_ loadRequest:[GADRequest request]];
  
  
  GADRequest *request = [[GADRequest alloc] init];
  request.testing =  [NSArray arrayWithObjects:
                    GAD_SIMULATOR_ID, nil];                              // Simulator
  
  [bannerView_ loadRequest:request];
   }
  
  
  
     //best practice for removing the barnnerView_
  
  -(void)removeSubviews{
   NSArray* subviews = [[CCDirector sharedDirector]openGLView].subviews;
   for (id SUB in subviews){
      [(UIView*)SUB removeFromSuperview];
      [SUB release];
   }
   NSLog(@"remove from view");
    }
  
      //this makes the refreshTimer count
  -(void)targetMethod:(NSTimer *)theTimer{
  
  //INCREASE OF THE TIMER AND SECONDS
  elapsedTime++; 
  seconds++;
  
  //INCREASE OF THE MINUTOS EACH 60 SECONDS
  if (seconds&gt;=60) {
      seconds=0; minutes++;
      [self removeSubviews];
      [self AdMob];
    }
  NSLog(@"TIME: %02d:%02d", minutes, seconds);
   }
  </code></pre>
  
  <p>`</p>