bethedwardess You can't delete your content from the EA App, but you can certainly keep these packs from loading in-game. If you don't need the (very little space) you'd get from deleting the packs, you can simply disable them, like this:
https://sims4.crinrict.com/eng/2017/03/disable-single-packs/
If you do need the space, that's a larger issue with your system—it's less than ideal to be so low on free storage that a few gigabytes would make any difference. Still, this can be done. Deleting the packs' folders alone won't help, as the EA App will simply reinstall the packs. But I have an unsupported and somewhat janky workaround if you'd like to try it. Just let me know.