Revert "Mecha: Diag: addtional drivers for diag functions and LTE support"

This reverts commit 585ed48e4531bc6e8c59f761a56f92421d11c3a3.

Conflicts:
	drivers/usb/gadget/f_diag.c
Revert "Mecha: LTE: additional driver files for LTE."

This reverts commit a61d8973ee759c39c5f03e04efde9fae21480eac.
Revert "htc: lte: updated driver"

This reverts commit d0a44aceb173282000d0d3c90c9669a6bd8b5ec0.
Mecha: fix build derps/cleanup lte driver revert