sm8450-common: Drop unused battery property

Change-Id: If92210f6f162403f79373d81a232373272c114b8

properties/vendor.prop

@@ -49,9 +49,6 @@ vendor.audio_hal.period_size=192
 vendor.qc2audio.per_frame.flac.dec.enabled=true
 vendor.qc2audio.suspend.enabled=true
 
-# Battery
-persist.vendor.battery.health=true
-
 # Bluetooth
 bluetooth.hardware.power.idle_cur_ma=6
 bluetooth.hardware.power.operating_voltage_mv=3700