Remove the FileManagerTranslations warning in the console

2015-02-18 11:54:19,209 [http://localhost:8080/xwiki/wiki/workspace/view/Main/] WARN  .o.i.DefaultObservationManager - The [org.xwiki.localization.wiki.internal.OnDemandDocumentTranslationBundle] listener is overwritting a previously registered listener [org.xwiki.localization.wiki.internal.ComponentDocumentTranslationBundle] since they both are registered under the same id [localization.bundle.document:workspace:FileManager.FileManagerTranslations]. In the future consider removing a Listener first if you really want to register it again.