One year after it launched, Twitter is killing off its #Music iOS app. The company announced today that it will be removing the app from the App Store this afternoon, with existing users continuing to have access to the app until April 18. Twitter said in a tweet that it will "continue to experiment with new ways to bring you great content based on the music activity we see every day on Twitter." AllThingsD reported back in October that the app was likely to be discontinued because of "ab
