Locking the tcbinfo structure should not be necessary in tcp_timer_delack(), so don't.
Locking the tcbinfo structure should not be necessary in tcp_timer_delack(),
so don't.

MFC after:      1 week
Reviewed by:    bz
Sponsored by:   Juniper Networks

jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase