drm/arc: Drop surplus connector registration

drm_connector_register does nothing before drm_dev_register(), it
is meant for hotpluggable connectors only. Same for the unregister side.
Acked-by: Thomas Zimmermann <tzimmermann@suse.de>
Acked-by: Sam Ravnborg <sam@ravnborg.org>
Cc: Eugeniy Paltsev <Eugeniy.Paltsev@synopsys.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Cc: Alexey Brodkin <abrodkin@synopsys.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20210112084358.2771527-6-daniel.vetter@ffwll.ch

drivers/gpu/drm/arc/arcpgu_sim.c

@@ -29,7 +29,6 @@ static int arcpgu_drm_connector_get_modes(struct drm_connector *connector)
 
 static void arcpgu_drm_connector_destroy(struct drm_connector *connector)
 {
-	drm_connector_unregister(connector);
 	drm_connector_cleanup(connector);
 }
 
@@ -80,7 +79,6 @@ int arcpgu_drm_sim_init(struct drm_device *drm, struct device_node *np)
 	ret = drm_connector_attach_encoder(connector, encoder);
 	if (ret < 0) {
 		dev_err(drm->dev, "could not attach connector to encoder\n");
-		drm_connector_unregister(connector);
 		goto error_connector_cleanup;
 	}