Revert "Add missing network indicator items"

This reverts commit c4393b91efa02b69f41b100c01eafb982e03134c.
[1/2] TrafficMeter: added option for auto-hiding on inactivity

Together with inactivity threshold

Thanks to @C3C0 for the code

Conflicts:
	core/java/android/provider/Settings.java

Conflicts:
	core/java/android/provider/Settings.java

Conflicts:
	core/java/android/provider/Settings.java

Change-Id: Ib2e629948888db420b75359e3323d438456932cd
TrafficMeter: fix auto hiding when Bytes is set as the unit