drm/amdgpu: remove more of the ring backup code

Not used anymore.

Reviewed-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
This commit is contained in:
Alex Deucher 2016-07-06 12:40:16 -04:00
commit 33b7ed0122
7 changed files with 4 additions and 101 deletions