drm/amdgpu: remove unconditional trap enable on add gfx11 queues

Rebase of driver has incorrect unconditional trap enablement
for GFX11 when adding mes queues.

Reported-by: Graham Sider <graham.sider@amd.com>
Signed-off-by: Jonathan Kim <jonathan.kim@amd.com>
Reviewed-by: Graham Sider <graham.sider@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>