How to Uninstall a Kit? (Sims 4 PC)

@Tsukimi_09  While it's not supported, you can simply delete the folder for the kit from the game's program files.  Unless you've changed the default install location in Origin, the file path should be:

Program Files (x86)\Origin Games\The Sims 4

SP20: Throwback Fit

SP21: Country Kitchen

SP22: Bust the Dust

Origin may try to redownload the kit though, and since it's such a small download, that may happen before you have a chance to stop it.  The easier path may be to disable the kit instead:

https://sims4.crinrict.com/eng/2017/03/disable-single-packs/

Here is a much simpler way of disabling packs if needed:
https://jamesturner.yt/disablepacks