Feature request - git add --patch should have an option to discard or drop a hunk Inbox

I frequently make changes to a number of files. I use `git add -p` to select a number of changes and wrap them up in a commit. Then I run it again to build another commit. Wash, rinse, repeat.

Sometimes I make a change I don't intend to keep. Maybe it's a typo, or some debug code, or my linter does something naughty. As described, I have to skip that hunk once per commit I'm building. Usually this is merely inconvenient, but each pass through `git add -p` runs the risk of me mistakenly adding unintended changes to my commit.

I could use `e` to edit away that hunk, but for some odd reason that feels too tedious. What I'd really like as a small quality of life enhancement is the ability to discard a hunk so that it's deleted immediately and I don't have to skip it again. `d` is taken, so I suggest `x` as a shortcut.

Thanks! Jon