writerfilter: remove no longer needed doctok/sprmids.xsl

Change-Id: Ia846d279ea5a4d375f8eb3736a0aabd419a07382
writerfilter: remove no longer needed doctok/sprmcodetostr.xsl

Change-Id: I4dcb2a6e73b95054204e31a3a54eedad2689db2c
writerfilter: remove no longer needed doctok/resourcetools.xsl

Change-Id: I378df2ddfc0912610b5f0d674c2a76601f4440c8
writerfilter: remove no longer needed doctok/resources.xmi

Change-Id: Ieda9780452af21aef40b925eff6693b8098e91f7