The open source OpenXR runtime

d/rift: Remove obsolete target_entry_list[] entry master

rift_builder_create() is the new way to recognize the HMD so remove the old way of probing for it. Signed-off-by: Ralph Campbell <ralphcampbell1@gmail.com> Part-of: <https://gitlab.freedesktop.org/monado/monado/-/merge_requests/2859>