gma500: remove references to drm_display_info raw_edid field

Another reference to raw_edid field of struct drm_display_info was added in
gma500 while the whole field was being removed, causing build
failure. Remove the hopefully last references to raw_edid.
Reported-by: NFengguang Wu <fengguang.wu@intel.com>
Signed-off-by: NJani Nikula <jani.nikula@intel.com>
Signed-off-by: NDave Airlie <airlied@gmail.com>

drivers/gpu/drm/gma500/cdv_intel_dp.c

@@ -1554,7 +1554,6 @@ cdv_intel_dp_detect(struct drm_connector *connector, bool force)
 		edid = drm_get_edid(connector, &intel_dp->adapter);
 		if (edid) {
 			intel_dp->has_audio = drm_detect_monitor_audio(edid);
-			connector->display_info.raw_edid = NULL;
 			kfree(edid);
 		}
 	}
@@ -1634,8 +1633,6 @@ cdv_intel_dp_detect_audio(struct drm_connector *connector)
 	edid = drm_get_edid(connector, &intel_dp->adapter);
 	if (edid) {
 		has_audio = drm_detect_monitor_audio(edid);
-
-		connector->display_info.raw_edid = NULL;
 		kfree(edid);
 	}
 	if (edp)