[host] remove completely broken host to host communication locking system
the original idea was to have a host-to-host (semi-)reliable communication protocol
but that just isn't possible without flow control and retransmit
IIRC the only side affect of this missing lock is a corner case where:
- node A totally crashes
- node A come backs to life, sends it's status info (seq_num information)
- node B does NOT receive the status info
- node A starts sending traffic and a few packets might get lost
this will be solved when rewriting the TX thread to optimize the seq_num handling
Signed-off-by: Fabio M. Di Nitto <fdinitto@redhat.com>