Delete the hash entry for a muc when parting.
Delete the hash entry for a muc when parting.

crimsonknave/lita-hipchat,onewheelskyward/lita-hipchat,litaio/lita-hipchat,sadfuzzy/lita-xmpp,darkside/lita-hipchat,lazyfrosch/lita-xmpp,jimmycuadra/lita-hipchat