drm/i915: remove intel_dsi::{port_bits,hs}

intel_dsi::port_bits is unused since commit 369602d3 (drm/i915: Add
support for port enable/disable for dual link configuration) and ::hs is
unused likely since commit 063c86f6 (drm/i915/dsi: remove
intel_dsi_cmd.c and the unused functions therein). Drop them.

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/20240216065326.6910-4-jirislaby@kernel.org

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

@@ -57,9 +57,6 @@ struct intel_dsi {
 		u16 phys;	/* ICL DSI */
 	};
 
-	/* if true, use HS mode, otherwise LP */
-	bool hs;
-
 	/* virtual channel */
 	int channel;
 
@@ -93,7 +90,6 @@ struct intel_dsi {
 	bool bgr_enabled;
 
 	u8 pixel_overlap;
-	u32 port_bits;
 	u32 bw_timer;
 	u32 dphy_reg;