Backport Remove compatibility doc for changes already released

Mark Craig

28.28.2014 b9be0cb9368b1e87693ef53ec6e1b2ab2dc01497

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user-friendly-name=Prove\u00efdor de sincronitzaci\u00f3
user-friendly-plural-name=Prove\u00efdors de sincronitzaci\u00f3