Disable Calais-generated vocabularies when the module is disabled

If you disable the OpenCalais module, the Calais vocabularies stay associated with nodes, and so the node editing interface becomes unwieldly (because the form_alter hook that moved Calais vocabularies off the node edit page is gone). It would be great if disabling Calais also disabled the Calais vocabularies.

In order to do this, I had to run the following query: DELETE vocabulary_node_types.* FROM vocabulary_node_types INNER JOIN vocabulary ON vocabulary_node_types.vid = vocabulary.vid WHERE vocabulary_node_types.vid = vocabulary.vid AND vocabulary.module = "calais"

Note that I didn't want to uninstall, because I might want to reenable Calais in the future, if we can configure RDF properly and get it to consume less of our server resources.