drm/amd/display: Clean up some code with unused registers

[Why]
Unused register in the code

[How]
Remove unused register

Signed-off-by: Anthony Koo <Anthony.Koo@amd.com>
Reviewed-by: Tony Cheng <Tony.Cheng@amd.com>
Acked-by: Rodrigo Siqueira <Rodrigo.Siqueira@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
This commit is contained in:
Anthony Koo 2019-10-28 11:45:14 -04:00 • committed by Alex Deucher
commit 581c448831