Historical clue formulations

• Missing from my memory — my computer's memory, I mean! — 2023-09-07
• Struck out — 2019-08-06
• Expunged — 2015-09-23
• X'd out — 2015-08-31
• Dropped — 2010-05-28
• Cut out — 2000-06-11
• Struck out — 1997-08-03
• Took out — 1996-04-06
• Struck out — 1995-10-08
• Expunged — 1994-05-14
• Struck out — 1994-02-26