anv: Drop support for VK_KHX_external_memory_*

These have been formally deprecated by Khronos never to be shipped
again.  The KHR versions should be implemented/used instead.

Change-Id: I16e5e5d0268bb14ed58a7c7ab012940f6bc111d3
Reviewed-by: Samuel Iglesias Gonsálvez <siglesias@igalia.com>
Reviewed-by: Lionel Landwerlin <lionel.g.landwerlin@intel.com>
3 files changed