Possible Clues:

• Having died out, perished
• Unlimited use of mobile phone cut heartlessly - dead
• Old flame can get taken to court and wiped out
• Having died out, like the dinosaur
• Long gone, like te dinosaur
• Former word for 'colour' no longer used, gone for ever
• Wiped out, without money and cashpoint emptied
• Completely gone
• Gone forever
• Sounds as if formerly it was stinking, but is no more