fixing up tile removing to be slicker
fixing up tile removing to be slicker

cocos2d/cocos2d-x-samples,gaojinhua/cocos2d-x-samples,nolansingroy/cocos2d-x-samples,jj918160/cocos2d-x-samples,fusijie/cocos2d-x-samples,i-z/cocos2d-x-samples