ftdi/xds100v2.cfg: Remove the warning as it has been tested

Change-Id: I3a8711867e247bc49caa79274ae882f07719d4ce
Signed-off-by: Laszlo Papp <lpapp@kde.org>
Reviewed-on: http://openocd.zylin.com/1492
Reviewed-by: Peter Stuge <peter@stuge.se>
Tested-by: jenkins
Reviewed-by: Paul Fertser <fercerpav@gmail.com>