On macOS view the Roblox Studio contents and look for .rbxm files. You will find the source for all the built in plugins.
Iām not too sure if I should remove any files at all if its gonna break other elements of studio or the files will simply be added back next time studio updates.
Perhaps an egregious bump, but really want to signal to whoever might be reading that can influence the situation that the default plugins take up an absurd amount of space. That would be fine, IF they gave us a way to disable their appearing on the toolbar (ideally as a drop-down menu option when right-clicking on the toolbox).