Revert "User defined wifi/usb tether network. [1/2]"

This reverts commit a738810989f3971a92666d8f0449f998afdc711c.
Show devices connected to the WiFi hotspot(1/2)

Change-Id: I8378e0ae07332f62b92a1681951f1236f6ef5ff9

Conflicts:
	services/java/com/android/server/connectivity/Tethering.java