Facebook may want to look up the phrase, “If it ain’t broke, don’t fix it.” TechCrunch reports that Facebook plans to take away the messaging feature from its core app and force users to download the separate Facebook Messenger app if they want to chat with their friends. Facebook has apparently been testing out using Messenger as its sole messaging app in Europe and has been encouraged by the results so far, TechCrunch says. TechCrunch says that the good news is that “mobile web, iPad, feature phone, Windows Phone, Paper, and desktop users can still message in their main Facebook apps or sites” for the time being and won’t be forced to use a separate app. WhatsApp users should also be happy with the