From the BBC:
Apple has released a tool to remove all U2 music from its customers' iTunes accounts six days after giving away the latest U2 album for free.
Some users had complained about the fact that their devices were silting up with old U2 songs which they had never quite got round to deleting, and were prompted to finally get round to doing this when Songs of Innocence was automatically downloaded to their devices.
It had not been immediately obvious to many of the account holders how to delete U2's entire back catalog. The US tech firm is now providing a one-click removal button.
It is rumoured that the tool will be updated to include the option to also delete all Coldplay tracks.