drm/amd/display: Remove unused define from amdgpu_dm_types

Signed-off-by: NHarry Wentland <harry.wentland@amd.com>
Acked-by: NHarry Wentland <Harry.Wentland@amd.com>
Reviewed-by: NTony Cheng <Tony.Cheng@amd.com>
Signed-off-by: NAlex Deucher <alexander.deucher@amd.com>

drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_types.h

@@ -59,11 +59,6 @@ int amdgpu_dm_atomic_commit(
 int amdgpu_dm_atomic_check(struct drm_device *dev,
 				struct drm_atomic_state *state);
 
-int dm_create_validation_set_for_stream(
-	struct drm_connector *connector,
-	struct drm_display_mode *mode,
-	struct dc_validation_set *val_set);
-
 void amdgpu_dm_connector_funcs_reset(struct drm_connector *connector);
 struct drm_connector_state *amdgpu_dm_connector_atomic_duplicate_state(
 	struct drm_connector *connector);