drm/i915: disable TV hotplug status check

As we removed TV hotplug, don't check its status ever.
Reviewed-by: NAdam Jackson <ajax@redhat.com>
Signed-off-by: NZhenyu Wang <zhenyuw@linux.intel.com>
Signed-off-by: NEric Anholt <eric@anholt.net>

drivers/gpu/drm/i915/intel_tv.c

@@ -1840,8 +1840,6 @@ intel_tv_init(struct drm_device *dev)
 	drm_connector_attach_property(connector,
 				   dev->mode_config.tv_bottom_margin_property,
 				   tv_priv->margin[TV_MARGIN_BOTTOM]);
-
-	dev_priv->hotplug_supported_mask |= TV_HOTPLUG_INT_STATUS;
 out:
 	drm_sysfs_connector_add(connector);
 }