Possible Clues:

• Leave throne
• Renounce position or power
• Step down
• Can one abide being around the cat, or does one just give up?
• If you get married again after a century, you'll get fired
• Give up a throne
• Give up salt I had returned Felix started eating
• Renounce the first two letters by Diana and Catherine
• Give up voluntarily
• In temper, promoted detectives stand down