[Imports] cleanup broken import "fix"

[malenki]

malenki wrote on Wed, 11 Jun 2014 16:50:05 +0200:

> Am Wed, 28 May 2014 23:16:56 +0200
> schrieb malenki <osm_ at malenki.ch>:
> 
> > Has anyone objections for removing water=lake;pond and also the
> > other proprietary data?
> 
> My conclusion to the discussion: I won't do anything since only
> a minority agrees to do anything at all (if even).

Since it seems after saying the above some more people meant it
wouldn't hurt too much do remove at least the "water=lake;pond" 
I will do that now.