How to get rid of Christmas Animation from mobile screen

I am seeing a Christmas animation on my mobile screen from 25th Dec 2012. I have no idea how did it come to my mobile. Because I rarely use internet on my mobile. And I used Internet last time at least 2-3 months before. It automatically appears after some mins and eats my battery. I have checked all running and installed application. But none of them giving me any clue about this animation. I am doubtful that this is the animation from Go launcher or Go SMS. but not confirmed. I also have scanned my mob for spyware and antivirus. But nothing found.