drm/nouveau/kms/nv50: remove code to support non-atomic dpms

Made completely unreachable (and broken) by atomic commits.

Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
diff --git a/drivers/gpu/drm/nouveau/nouveau_connector.c b/drivers/gpu/drm/nouveau/nouveau_connector.c
index b69ba82..790a9ac2 100644
--- a/drivers/gpu/drm/nouveau/nouveau_connector.c
+++ b/drivers/gpu/drm/nouveau/nouveau_connector.c
@@ -1118,43 +1118,6 @@ nouveau_connector_funcs_lvds = {
 };
 
 static int
-nouveau_connector_dp_dpms(struct drm_connector *connector, int mode)
-{
-	struct nouveau_encoder *nv_encoder = NULL;
-
-	if (connector->encoder)
-		nv_encoder = nouveau_encoder(connector->encoder);
-	if (nv_encoder && nv_encoder->dcb &&
-	    nv_encoder->dcb->type == DCB_OUTPUT_DP) {
-		if (mode == DRM_MODE_DPMS_ON) {
-			u8 data = DP_SET_POWER_D0;
-			nvkm_wraux(nv_encoder->aux, DP_SET_POWER, &data, 1);
-			usleep_range(1000, 2000);
-		} else {
-			u8 data = DP_SET_POWER_D3;
-			nvkm_wraux(nv_encoder->aux, DP_SET_POWER, &data, 1);
-		}
-	}
-
-	return drm_helper_connector_dpms(connector, mode);
-}
-
-static const struct drm_connector_funcs
-nouveau_connector_funcs_dp = {
-	.dpms = nouveau_connector_dp_dpms,
-	.reset = nouveau_conn_reset,
-	.detect = nouveau_connector_detect,
-	.force = nouveau_connector_force,
-	.fill_modes = drm_helper_probe_single_connector_modes,
-	.set_property = nouveau_connector_set_property,
-	.destroy = nouveau_connector_destroy,
-	.atomic_duplicate_state = nouveau_conn_atomic_duplicate_state,
-	.atomic_destroy_state = nouveau_conn_atomic_destroy_state,
-	.atomic_set_property = nouveau_conn_atomic_set_property,
-	.atomic_get_property = nouveau_conn_atomic_get_property,
-};
-
-static int
 nouveau_connector_hotplug(struct nvif_notify *notify)
 {
 	struct nouveau_connector *nv_connector =
@@ -1348,10 +1311,7 @@ nouveau_connector_create(struct drm_device *dev, int index)
 			return ERR_PTR(ret);
 		}
 
-		if (dev->mode_config.funcs->atomic_commit)
-			funcs = &nouveau_connector_funcs;
-		else
-			funcs = &nouveau_connector_funcs_dp;
+		funcs = &nouveau_connector_funcs;
 		break;
 	default:
 		funcs = &nouveau_connector_funcs;