revert effect node change.

Author: jtwigg

cocos2d/CCEffectNode.m

@@ -150,12 +150,6 @@ -(void)draw:(CCRenderer *)renderer transform:(const GLKMatrix4 *)transform
 
     NSAssert(_renderer == renderer, @"CCEffectNode error!");
 
-	if(_contentSizeChanged){
-		[self destroy];
-		_contentSizeChanged = NO;
-	}
-	
-	
     // Render children of this effect node into an FBO for use by the
     // remainder of the effects.
     [self begin];