drm/amd/display: remove some unused wrappers

Signed-off-by: Dave Airlie <airlied@redhat.com>
Reviewed-by: Tony Cheng <Tony.Cheng@amd.com>
Acked-by: Harry Wentland <Harry.Wentland@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_services.c

@@ -36,10 +36,6 @@
 #include "amdgpu_dm_types.h"
 #include "amdgpu_pm.h"
 
-#define dm_alloc(size) kzalloc(size, GFP_KERNEL)
-#define dm_realloc(ptr, size) krealloc(ptr, size, GFP_KERNEL)
-#define dm_free(ptr) kfree(ptr)
-
 /******************************************************************************
  * IRQ Interfaces.
  *****************************************************************************/