init.rc: remove system cgroup migraion

We never use CONFIG_RT_GROUP_SCHED in GKI kernel, but that could be set
on legacy devices. Remove system cgroup migration and also RT settings
as we should not have any task under those groups.

Bug: 191925901
Test: Build
Signed-off-by: Wei Wang <wvw@google.com>
Change-Id: I492833975e28e9888e412711e80670ca0901010d
diff --git a/rootdir/init.rc b/rootdir/init.rc
index 6e85da5..8da0199 100644
--- a/rootdir/init.rc
+++ b/rootdir/init.rc
@@ -191,33 +191,6 @@
     chown system system /dev/cpuctl/camera-daemon/tasks
     chmod 0664 /dev/cpuctl/camera-daemon/tasks
 
-    # Android only use global RT throttling and doesn't use CONFIG_RT_GROUP_SCHED
-    # for RT group throttling. These values here are just to make sure RT threads
-    # can be migrated to those groups. These settings can be removed once we migrate
-    # to GKI kernel.
-    write /dev/cpuctl/cpu.rt_period_us 1000000
-    write /dev/cpuctl/cpu.rt_runtime_us 950000
-    # Surfaceflinger is in FG group so giving it a bit more
-    write /dev/cpuctl/foreground/cpu.rt_runtime_us 450000
-    write /dev/cpuctl/foreground/cpu.rt_period_us 1000000
-    write /dev/cpuctl/background/cpu.rt_runtime_us 50000
-    write /dev/cpuctl/background/cpu.rt_period_us 1000000
-    write /dev/cpuctl/top-app/cpu.rt_runtime_us 100000
-    write /dev/cpuctl/top-app/cpu.rt_period_us 1000000
-    write /dev/cpuctl/rt/cpu.rt_runtime_us 100000
-    write /dev/cpuctl/rt/cpu.rt_period_us 1000000
-    write /dev/cpuctl/system/cpu.rt_runtime_us 100000
-    write /dev/cpuctl/system/cpu.rt_period_us 1000000
-    write /dev/cpuctl/system-background/cpu.rt_runtime_us 50000
-    write /dev/cpuctl/system-background/cpu.rt_period_us 1000000
-    write /dev/cpuctl/nnapi-hal/cpu.rt_runtime_us 50000
-    write /dev/cpuctl/nnapi-hal/cpu.rt_period_us 1000000
-    write /dev/cpuctl/camera-daemon/cpu.rt_runtime_us 50000
-    write /dev/cpuctl/camera-daemon/cpu.rt_period_us 1000000
-
-    # Migrate root group to system subgroup
-    copy_per_line /dev/cpuctl/tasks /dev/cpuctl/system/tasks
-
     # Create an stune group for camera-specific processes
     mkdir /dev/stune/camera-daemon
     chown system system /dev/stune/camera-daemon
@@ -1275,7 +1248,3 @@
 
 on property:sys.boot_completed=1 && property:sys.init.userspace_reboot.in_progress=1
   setprop sys.init.userspace_reboot.in_progress ""
-
-# Migrate tasks again in case kernel threads are created during boot
-on property:sys.boot_completed=1
-  copy_per_line /dev/cpuctl/tasks /dev/cpuctl/system/tasks