Remove ACTION_CONFIGURE_WIFI_SETTINGS and ACTION_WIFI_SAVED_NETWORK_SETTINGS.

ConfigureWifiSettings page will instead use WIFI_IP_SETTINGS intent.
Intent for SavedAccessPointsSettingsActivity is unused and can be
removed.

Bug: 34392691
Bug: 36516068
Test: make
Change-Id: I86547df387b41241d531e361014581d0763008ee