drm/mm: remove unused rb_hole_size()

Just some code cleanup.

Signed-off-by: Christian König <christian.koenig@amd.com>
Reviewed-by: Nirmoy Das <nirmoy.das@amd.com>
Link: https://patchwork.freedesktop.org/patch/370296/
This commit is contained in:
Christian König 2020-06-08 17:27:01 +02:00
commit 41c0e78aae