sm8450-common: sepolicy: Remove /sys/class/qcom-battery label

It's set globally now

Change-Id: Idccb51649fa72f6343534cdc4a951cd96909ff62

sepolicy/vendor/genfs_contexts

@@ -1,5 +1,4 @@
 # Battery
-genfscon sysfs /class/qcom-battery u:object_r:vendor_sysfs_battery_supply:s0
 genfscon sysfs /devices/platform/soc/soc:xm_battmngr/power_supply/battery u:object_r:vendor_sysfs_battery_supply:s0
 genfscon sysfs /devices/platform/soc/soc:xm_battmngr/power_supply/usb u:object_r:vendor_sysfs_usb_supply:s0