drm/i915/opregion: remove unused lid_state

Not sure if lid_state has ever been used, but at least not for a long
time. Remove it.
Suggested-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Reviewed-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20240117122546.1551400-1-jani.nikula@intel.com

drivers/gpu/drm/i915/display/intel_opregion.c

@@ -266,7 +266,6 @@ struct intel_opregion {
 	void *vbt_firmware;
 	const void *vbt;
 	u32 vbt_size;
-	u32 *lid_state;
 	struct work_struct asle_work;
 	struct notifier_block acpi_notifier;
 };
@@ -958,7 +957,6 @@ int intel_opregion_setup(struct drm_i915_private *dev_priv)
 		goto err_out;
 	}
 	opregion->header = base;
-	opregion->lid_state = base + ACPI_CLID;
 
 	drm_dbg(&dev_priv->drm, "ACPI OpRegion version %u.%u.%u\n",
 		opregion->header->over.major,