'Remove an identity from the given JID/node combination.
Arguments:
jid      -- The JID to modify.
node     -- The node to modify.
category -- The identity\'s category.
itype    -- The identity\'s type value.
name     -- Optional, human readable name for the identity.
lang     -- Optional, the identity\'s xml:lang value.'

def del_identity(self, jid=None, node=None, **kwargs):

    self.api['del_identity'](jid, node, None, kwargs)
