This has probably been said a million times
However it seems a million and one times is still necessary. Gragas can have this http://www.leagueoflegendsskins.com/images/champions/splash/Gragas_4.jpg
but Graves can't have a cigar 
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They wanted the Vanilla skins to be consistent across all clients, and Graves' cigar was removed because of the laws in some countries.
Get over it. Reported for spam.
Honestly it doesnt make any sense. But one would say that since its a skin it doesnt follow the same rules as Base skins, but its still pretty childish if you ask me, and as far as i know Gentleman Cho'gath has it as well.
1,000,001 times
Honestly, my understanding of this is that Gragas here is portrayed in a not exactly positive light, so kids won't be looking up to him like they do the uber-cool badass Graves.