Dead code removal.

It ain't functional right now (no member of Host called mEncoding) and we don't do unicode yet - but it is on our to do list so I'd be reluctant to excise something of use in the future until we decide that it isn't what we need for that job - then - not now.  As to pulling things out of the history - it is easier to get something that is put aside in bubble wrap on the edge of the table rather than digging around in the recycling bin and covered in other leavings - but that's just my opinion and if you feel it is just so much cruft then I guess there is no harm in a bit of dumpster-diving.