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

This reverts commit 0306933c03c11111b18aa118d574e2c0e8a51941.

Change-Id: Iffbfcb7586fddc1ccd173a045923883c32e6f2f8
Merge "Revert "User defined wifi/usb tether network. [2/2]"" into du44