system_server: remove access to /sys/class/leds.

Removing legacy rules. system_server now depends on Lights HAL (which
has its own domain) instead of /sys/class/leds.

Bug: 70846424
Test: sailfish boots; screen, flashlight work fine.

Change-Id: I6f116a599cab26ae71e45f462b33328bc8d43db5

private/system_server.te

@@ -706,13 +706,6 @@ allow system_server proc_uid_time_in_state:dir r_dir_perms;
 
 r_dir_file(system_server, rootfs)
 
-### Rules needed when Light HAL runs inside system_server process.
-### These rules should eventually be granted only when needed.
-allow system_server sysfs_leds:lnk_file read;
-allow system_server sysfs_leds:file rw_file_perms;
-allow system_server sysfs_leds:dir r_dir_perms;
-###
-
 # Allow WifiService to start, stop, and read wifi-specific trace events.
 allow system_server debugfs_tracing_instances:dir search;
 allow system_server debugfs_wifi_tracing:dir search;