Remove the *byteShort string resources from the frameworks

The "byteShort" is still kept because ICU's version is too long for this
use case.

This commit is separated to unblock the previous commit which removed
the usage of these strings.

Bug: 36994779
Bug: 71580745
Bug: 217592956
Test: m droid
Change-Id: I1833bd357860841037aa323cdf6acf9366b6ca1e