Revert "Add "lxc" to the runtime dependencies"
Revert "Add "lxc" to the runtime dependencies"

This reverts commit 59a024bdd9a08e3f4b80540ad7554d397688ed48.

bsmr-docker/boot2docker,pdevine/boot2docker,docker/boot2docker,tomgco/boot2docker,skippbox/boot2docker