ensure tokens are deleted everywhere
ensure tokens are deleted everywhere

This commit ensures that tokens are removed on all nodes. Prior to this
commit the token would be deleted from the local node that received a
channel delete API call. Because the token delete command is never
issued through redis to the config master, the token is never cleaned
up on the other nodes. Furthermore, on a system reboot the orphaned
token will be resynced down from the config master to the local node.

This commmit also removes the completely unused destroy method.

srid/logplex,voidlock/logplex,mkrysiak/logplex