[Imports] cleanup broken import "fix"

[malenki]

Am Wed, 11 Jun 2014 18:00:59 +0200
schrieb Christoph Hormann <chris_hormann at gmx.de>:

> On Wednesday 11 June 2014, Dan S wrote:
> >
> > That's certainly a valid decision to take. It's a shame though!
> >
> > The most important core of your idea was remove the poorly
> > double-tagged "water=lake;pond" tags that user "WorstFixer" added
> > blindly. That's quite a precise fix that would improve data quality
> > IMHO. I didn't see majority opposition to that.
> 
> Well - i was the one who opposed the removal but i also made
> suggestions how to maintain the useful information in there while
> avoiding the ugly double tag.  

I won't use a tag which I don't consider useful. 
For me it is:
waterway=* == flowing water
natural=water == not flowing (though the most waterbodies have some
current)