It might have been ifitness that had lots of fake reviews? I remember seeing some discussion / complaints about that - it was updated very often with trivial updates, then immediately got a large number of 5* reviews so it showed a great rating and lots of happy users on itunes. Then a stream of regular reviews that looked a bit more 'real', and once the rating dropped a bit.. a new version, repeat.
So if it was that one, it was probably removed for that reason. Blatant gaming of the app store.