Earlier quoted context omitted.
It's incredibly disappointing actually how often this happens. I can't count the amount of SO questions I've had to edit from others posting live API Keys for everything from custom services to AWS.
When you do this is there a way to completely get rid of the information? Usually you can go back an look at the edit history to see the original post.
Wouldn't matter. Tons of bots are scraping every inch of the internet all the time, and if something been online for five seconds, it has been cached/stored somewhere. Always assume that anything you've put up on the internet, can forever be accessed by someone.
The only thing you can do is rotating the token/secret.