the code we used to have in libusb_util.c has been migrated to
libosmousb, a new part of libosmocore.git. Let's remove our historic
copy and use the new shared library instead.
Change-Id: Ib588c08f873c4da8f3a02815ee2767674a6a5061
this ATR does not encode any data and uses all defaults.
the lower default speed is also better handled by the hardware.
handling faster speeds is upcoming.
Change-Id: I5a4f2f94bea1a15aedbef5a6f2f49344387dc11d
