drm/amd/display: stop using connector->override_edid

The connector->override_edid flag is strictly for EDID override debugfs
management, and drivers have no business using it.

Cc: Alex Deucher <alexander.deucher@amd.com>
Cc: Christian König <christian.koenig@amd.com>
Cc: Xinhui Pan <Xinhui.Pan@amd.com>
Cc: amd-gfx@lists.freedesktop.org
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
Reviewed-by: Harry Wentland <harry.wentland@amd.com>
Acked-by: Alex Deucher <alexdeucher@gmail.com>
Link: https://patchwork.freedesktop.org/patch/msgid/c901869ff8a4e3aebc4abec99c7dd7b4c224f6e6.1666614699.git.jani.nikula@intel.com

drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c

@@ -6108,7 +6108,6 @@ static void create_eml_sink(struct amdgpu_dm_connector *aconnector)
 				aconnector->base.name);
 
 		aconnector->base.force = DRM_FORCE_OFF;
-		aconnector->base.override_edid = false;
 		return;
 	}
 
@@ -6143,8 +6142,6 @@ static void handle_edid_mgmt(struct amdgpu_dm_connector *aconnector)
 		link->verified_link_cap.link_rate = LINK_RATE_HIGH2;
 	}
 
-
-	aconnector->base.override_edid = true;
 	create_eml_sink(aconnector);
 }