Revert node combine changes to fix missing streets

This commit https://github.com/osmandapp/OsmAnd-tools/commit/6da729047dd2c21e968989aafaaaed637d74d800 introduces an issue:
https://groups.google.com/forum/#!topic/osmand/oKRKSNZHW4w

I did not investigate, where exactly the issue is.
But maybe this helps, even if you don't merge it.