Just cull the ones that don't look like they will amount to anything right at the very bottom. Save em, and throw them in with your trim when you harvest.
Use your trim to make some cookies or something.
Also, you don't have to trim anything if you don't want to, it was just a suggestion.
Some growers leave them, and when they harvest they just take the tops, exposing more light to these pissy bottom branches to get a bit more yield off them.