writerfilter: drop unused FONTTABLE from doctok

Change-Id: I244cd35bd4fd935ec814e121ebed16d5402d6880
writerfilter: drop unused LISTTABLE from doctok

There is NS_ooxml::LN_NUMBERING that does the same, use that instead.

Also drop SttbRgtplc, that's trivial as no other tokenizer nor the
dmapper referred to it.

Change-Id: Ic4f3c8908f114a60186b0fb06e0fad2b2157f6de
writerfilter: remove unused LFOTABLE in doctok

Change-Id: Ie10f2a8a74ad0011d994f44e12903bbc63e16dcb
writerfilter: remove unused STYLESHEET in doctok

Change-Id: I9160730029cf2272172b50726168390ac6093daf