delete remains of bootanimation copying.

Causing error
Copy: /home/jackeagle/aogpl/out/target/product/i9082/system/media/audio/ringtones/Sheep.mp3
make: *** No rule to make target 'vendor/aogp/prebuilt/common/bootanimation/480.zip', needed by '/home/jackeagle/aogpl/out/target/product/i9082/system/media/bootanimation.zip'. Stop.
make: *** Waiting for unfinished jobs....
jackeagle@aogp:~/aogpl$