Remove French pluralization rules.

[AntoineBecquet]

I don't now where does this "number % 10 == 1" comme from, but in French "trente et un chats" is as plural as "trente deux chats", all numbers superior or equal at two are.

Apparently this rule existed on the seventeenth century :

13. Un après un nombre (vingt et un, trente et un, etc.) veut le pluriel : vingt et un chevaux. Autre était la décision de l'Académie au XVIIe siècle : On dit ce mois a trente et un jour, et non pas trente et un jours ;

https://www.littre.org/definition/un

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A little of topic, but I found this error because this pluralization rule was applied to all of our Rails project.

We had strange behavior like :

irb(main):001:0> I18n.t("toto", count: 20)
=> "20 totos"
irb(main):002:0> I18n.t("toto", count: 21)
=> "un toto"

This behavior won't exist in French anymore, but is it expected for other languages ?

[AntoineBecquet]

Funnily, the existing "vingt et un mille" fixture was already correct because "mille" is invariable.

[jlduran]

Thank you for your contribution!
Expect a new gem release over the weekend.

[dblock]

Merci!