Remove access to the LHBM node from SystemUI

Bug: 183223359
Test: on device
Change-Id: I56cdc5ab4654ac523b4a80f270d5567aac16cdc7
diff --git a/conf/init.raviole.rc b/conf/init.raviole.rc
index 39887da..a14423d 100644
--- a/conf/init.raviole.rc
+++ b/conf/init.raviole.rc
@@ -39,10 +39,6 @@
     chown system system /dev/goodix_fp
     exec_background - system shell -- /vendor/bin/trusty_apploader /vendor/firmware/g6.app
 
-    # LHBM
-    # FIXME(b/183223359): Only grant write access to SystemUI.
-    chmod 0666 /sys/class/drm/card0/card0-DSI-1/panel/backlight/panel0-backlight/local_hbm_mode
-
     # Start the twoshay touch service
     start twoshay