tools: usb: usbip: Get rid of driver name printout in README

Driver name is no longer printed out so update the README
examples to avoid confusion.

Signed-off-by: Magnus Damm <damm+renesas@opensource.se>
Acked-by: Shuah Khan <skhan@linuxfoundation.org>
Link: https://lore.kernel.org/r/157677692518.684.15385402529285904844.sendpatchset@octo


Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>