I bet the first part of that line could work, but I can’t imagine the last part working because he emphasizes “starships” with force.
It’s difficult to find a replacement line because it has to have scene-ending punch. I queued up several Clone Wars episodes featuring 3PO to see what emerges. Snippets that might work so far include:

“I’m afraid that was a long time ago.”
“Just the usual capacitors, nothing special.”
(In a sad voice) “It’s all coming back to me now.”
Something like “I am a protocol droid… I can advise on etiquette.”