Chrome saving replies/text (1 Viewer)

I just wondered, sometimes you may click reply to a particular comment and then change your mind about replying. However, when you go back into the thread, it has saved the quote from the original poster and/or what you were going to say to a thread. This is particularly annoying if using a phone, but is there a button in the text options to instantly remove the text rather that manually deleting? I only use Google chrome when using SBT.

TIA