travis: save some time by not setting up the host
travis: save some time by not setting up the host

to compile libiio on x86, when we are actually building on ARM

Signed-off-by: Robin Getz <c66e5a86ef9317cf35cecb2ed063996b2100ed4b@analog.com>

analogdevicesinc/libiio,analogdevicesinc/libiio,analogdevicesinc/libiio,analogdevicesinc/libiio