TO REVERT: remove xtwifi.conf

  Qualcomm has recently taken down CM's huashan device tree due
  to this file, let's remove it (and hope that's good enough to
  keep their takedown crawlers from noticing) until their automated
  ridiculousness is resolved.

  https://github.com/github/dmca/blob/master/2014-07-02-Qualcomm.md

Change-Id: I1d566954a98f5e2fad04da82787232818949d2d9
Signed-off-by: KhasMek <Boushh@gmail.com>