remove more useless node->childnodes checks
remove more useless node->childnodes checks

svn path=/trunk/kdelibs/kate/; revision=175187

sandsmark/kate,sandsmark/kate,hlamer/kate,hlamer/kate,DickJ/kate,jfmcarreira/kate,sandsmark/kate,hlamer/kate,DickJ/kate,cmacq2/kate,cmacq2/kate,DickJ/kate,cmacq2/kate,hlamer/kate,hlamer/kate,jfmcarreira/kate,hlamer/kate,sandsmark/kate,hlamer/kate,jfmcarreira/kate,hlamer/kate,hlamer/kate,DickJ/kate,hlamer/kate