gfxstream-protocols: nuke vkRegisterBufferColorBufferGOOGLE + vkRegisterImageColorBufferGOOGLE

Not used, prep for memory changes.

BUG=262595016
TEST=compile

Change-Id: I73d1cda6eac78d3d35c6f0b2581b6a8319eadcb7
5 files changed