drm/i915: remove intel_vbt_panel_data::edp::initialized

intel_vbt_panel_data::edp::initialized is not used since commit
9f0e7ff4 (drm/i915: fetch eDP configuration data from the VBT).
Drop it.

Found by https://github.com/jirislaby/clang-struct.
Signed-off-by: Jiri Slaby (SUSE) <jirislaby@kernel.org>
Cc: Jani Nikula <jani.nikula@linux.intel.com>
Cc: Joonas Lahtinen <joonas.lahtinen@linux.intel.com>
Cc: Rodrigo Vivi <rodrigo.vivi@intel.com>
Cc: Tvrtko Ursulin <tvrtko.ursulin@linux.intel.com>
Cc: intel-gfx@lists.freedesktop.org
Acked-by: Jani Nikula <jani.nikula@intel.com>
Signed-off-by: Rodrigo Vivi <rodrigo.vivi@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20240216065326.6910-8-jirislaby@kernel.org

drivers/gpu/drm/i915/display/intel_display_types.h

@@ -327,7 +327,6 @@ struct intel_vbt_panel_data {
 		struct edp_power_seq pps;
 		u8 drrs_msa_timing_delay;
 		bool low_vswing;
-		bool initialized;
 		bool hobl;
 	} edp;