In reply to Ian Pegg.

There are already ways to remove blocks, described here (https://www.ostraining.com/blog/wordpress/unwanted-gutenberg-blocks/ - haven't tested myself) and here (https://rudrastyh.com/gutenberg/remove-default-blocks.html#remove_blocks - this way I've used several times already).

But yeah, most likely the styles and scripts will still be loaded, the block just won't be visible from inside the Block Editor.