partially revert 57b72b8d497ffbf89353b498591514f432dd4294
partially revert 57b72b8d497ffbf89353b498591514f432dd4294

RFC6120 8.1.1.1 states:
> A stanza sent from a client to a server for direct processing by the server
> (e.g., roster processing as described in [XMPP‑IM] or presence sent to the
> server for broadcasting to other entities) MUST NOT possess a 'to' attribute.

How are we going to check if the to attribute gets added?

ggozad/node-xmpp,qbit/node-xmpp,tempbottle/node-xmpp,agebrock/node-xmpp,ggozad/node-xmpp,qbit/node-xmpp,stliu/node-xmpp,xmppjs/xmpp.js,WeBest/node-xmpp,node-xmpp/node-xmpp,xmppjs/xmpp.js,agebrock/node-xmpp,node-xmpp/node-xmpp,eelcocramer/node-xmpp