[cpan2nix] perlPackages.LinguaStem: cleanup

dependencies:
perlPackages.LinguaPTStemmer: init at 0.02
perlPackages.LinguaStemFr: init at 0.02
perlPackages.LinguaStemIt: init at 0.02
perlPackages.LinguaStemRu: init at 0.04
perlPackages.LinguaStemSnowballDa: init at 1.01
perlPackages.SnowballNorwegian: init at 1.2
perlPackages.SnowballSwedish: init at 1.2
perlPackages.TextGerman: init at 0.06