removing ooo citation support

Hi all,

Just a bit of a heads-up, I'm going to remove the code for inserting 
citations from Tellico into OpenOffice.org. I haven't ported it over to 
cmake yet, from the old automake code. But before I ported to cmake, it 
wouldn't compile with ooo3 anyway.

It's code that I don't really understand well, since much of it is copied 
from some other tutorials. I don't think I've gotten more than one or two 
emails about it in a couple of years. And with Zotero and Bibus both 
supporting the functionality, it's better for Tellico not to pretend. :)

Robby