Don’t show the long captcha string in the e-mail sent from a contact form

When an e-mail is sent from a contact form containing a captcha field, the body displays a long and distracting string of random characters. Is it possible not to output it? Thank you.

You can review this earlier thread to find a solution to this issue. @flaviocopes mentions at the end of the thread that a built-in solution is imminent.

Thank you! :)
(Would putting that in my custom template folder rather than in the plugin template be cleaner? So it’s not overwritten at the next update.)

Good question. Unfortunately I don't have a definitive answer as to where is the best place to store this fix.
The update as described in the earlier thread WILL GET OVERWRITTEN. I just checked my site and the fix WAS overwritten in a recent update.
Perhaps someone else can provide a suggestion?

I just tried putting it in my own theme’s template, and it seems to be working. So I guess it may be a more durable solution until the built-in fix is released.