drm/i915: Eliminate the unused dev_priv->vbt.lvds_vbt

dev_priv->vbt.lvds_vbt is set but never actually used. Kill it.
Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Reviewed-by: Rodrigo Vivi <rodrigo.vivi@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20180508124136.10969-3-ville.syrjala@linux.intel.com

drivers/gpu/drm/i915/i915_drv.h

@@ -1049,7 +1049,6 @@ struct intel_vbt_data {
 	/* Feature bits */
 	unsigned int int_tv_support:1;
 	unsigned int lvds_dither:1;
-	unsigned int lvds_vbt:1;
 	unsigned int int_crt_support:1;
 	unsigned int lvds_use_ssc:1;
 	unsigned int int_lvds_support:1;

drivers/gpu/drm/i915/intel_bios.c

@@ -267,8 +267,6 @@ parse_lfp_panel_data(struct drm_i915_private *dev_priv,
 	if (!lvds_lfp_data_ptrs)
 		return;
 
-	dev_priv->vbt.lvds_vbt = 1;
-
 	panel_dvo_timing = get_lvds_dvo_timing(lvds_lfp_data,
 					       lvds_lfp_data_ptrs,
 					       panel_type);
@@ -1502,7 +1500,6 @@ init_vbt_defaults(struct drm_i915_private *dev_priv)
 
 	/* LFP panel data */
 	dev_priv->vbt.lvds_dither = 1;
-	dev_priv->vbt.lvds_vbt = 0;
 
 	/* SDVO panel data */
 	dev_priv->vbt.sdvo_lvds_vbt_mode = NULL;