Gcc 8 identified hb_tree_csearch() as an infinite recursion, and it
turns out that we never call this function, anyway. So just remove
it.
Fixes#5670.
Signed-off-by: Jeff Squyres <jsquyres@cisco.com>
(cherry picked from commit 06c1bf73da875f4a6449f38a993530d6fae7817d)
Signed-off-by: Brian Barrett <bbarrett@amazon.com>
547fb3d933