Fix up open bugs from gs101 AIDL migration

1. Remove unused group "wakelock".
2. Correct the right return value on setCurrentUsbFunctions.

Bug: 266694076
Test: Boot to home and function work
Change-Id: If0925a61e481e4deca560dc8dfc1be80a76c148f
diff --git a/usb/gadget/android.hardware.usb.gadget-service.rc b/usb/gadget/android.hardware.usb.gadget-service.rc
index 3c9c1cc..ba7d5f6 100644
--- a/usb/gadget/android.hardware.usb.gadget-service.rc
+++ b/usb/gadget/android.hardware.usb.gadget-service.rc
@@ -1,8 +1,7 @@
 service vendor.usb-gadget-hal /vendor/bin/hw/android.hardware.usb.gadget-service.gs101
     class hal
     user system
-    group system shell mtp wakelock
-    capabilities WAKE_ALARM BLOCK_SUSPEND
+    group system shell mtp
 
 on post-fs
     chown root system /sys/class/typec/port0/power_role