drm/i915: Don't set allow_fb_modifiers explicitly

Since

commit 890880dd
Author: Paul Kocialkowski <paul.kocialkowski@bootlin.com>
Date:   Fri Jan 4 09:56:10 2019 +0100

    drm: Auto-set allow_fb_modifiers when given modifiers at plane init

this is done automatically as part of plane init, if drivers set the
modifier list correctly. Which is the case here.
Acked-by: Jani Nikula <jani.nikula@intel.com>
Reviewed-by: Lyude Paul <lyude@redhat.com>
Signed-off-by: Daniel Vetter <daniel.vetter@intel.com>
Cc: "Ville Syrjälä" <ville.syrjala@linux.intel.com>
Cc: Manasi Navare <manasi.d.navare@intel.com>
Cc: Jani Nikula <jani.nikula@intel.com>
Cc: "José Roberto de Souza" <jose.souza@intel.com>
Cc: Chris Wilson <chris@chris-wilson.co.uk>
Cc: Imre Deak <imre.deak@intel.com>
Cc: Dave Airlie <airlied@redhat.com>
Cc: Maarten Lankhorst <maarten.lankhorst@linux.intel.com>
Cc: Karthik B S <karthik.b.s@intel.com>
Cc: Matt Roper <matthew.d.roper@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20210427092018.832258-3-daniel.vetter@ffwll.ch

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

@@ -11704,8 +11704,6 @@ static void intel_mode_config_init(struct drm_i915_private *i915)
 	mode_config->preferred_depth = 24;
 	mode_config->prefer_shadow = 1;
 
-	mode_config->allow_fb_modifiers = true;
-
 	mode_config->funcs = &intel_mode_funcs;
 
 	mode_config->async_page_flip = has_async_flips(i915);