Revert "Include both eth%d and usb%d ethernet interfaces on U+"

This reverts commit 11eac8e12b30643881951b640da0db9cbe78d3c7.

Reason for revert: there are devices in the field using usbX interfaces for tethering

Change-Id: I7bbcbb703294de1c9dd3e0390bc8ad28aa350ef6
2 files changed