the work of taking something away in a cart or truck and disposing of it
The easiest way to accomplish this is with your bike in a repair stand, but since you probably aren't carting one around, see if you can hang the bike on the low branch of a tree, or have a companion hold it up for you.
It's more exposed to being banged around than the front derailleur; moreover, for crisp shifts the rear derailleur needs to be dialed in more precisely than the front.
The easiest way to accomplish this is with your bike in a repair stand, but since you probably aren't carting one around, see if you can hang the bike on the low branch of a tree, or have a companion hold it up for you.