logger: Remove logger because not needed anymore
logger: Remove logger because not needed anymore

Now that we have removed the ciao/networking/libsnnet dependency,
there is no reason to use the logger anymore.

This patch removes the logger from virtcontainers.

Signed-off-by: Sebastien Boeuf <90b401417360b1924ef3f520ddee932686110f85@intel.com>

wcwxyz/virtcontainers,containers/virtcontainers,wcwxyz/virtcontainers,wcwxyz/virtcontainers,containers/virtcontainers