Setup common tuna extract-files/remove Google self-extractors

Since tuna devices are no longer maintained by AOSP there is
no need to have multiple locations and duplicate files. This
Will put all common files in vendor/samsung/tuna and device
specific ones in vendor/samsung/toro.

Change-Id: Id2c4fbd45ab35998a863d2e5e7430042d34ae4f5
tuna: commonize what we can (3/4)

Change-Id: Ibb366cc3a4cec98b08bac8299c5022d68426fcf2