Settings: Move SIM restrictions currently applied to per-app data usage

When Google introduced commit d3b35f24, all the custom addons for
per-app network isolation became hidden on devices that set the
overlay config_show_sim_info to "false".

Expose only the toggles that really make sense, i.e. for the mentioned
usecase, leave the main toggle (restrict all), WiFi and VPN data
toggles.

Change-Id: I4720483d98ae69fbb6eec8fa749e8d071e91c629