Remove eslint-plugin-import-order-autofix

[amannn]

… and replace it with import/order since eslint-plugin-import-order-autofix isn't maintained well.

The alternative doesn't have an auto fix option, but since all dependants already have the autofix applied, this shouldn't be a big deal.

[amannn]

There's also eslint-plugin-codebox/sort-imports. However it would be great if we'd simply stick to the built-in one.

[amannn]

import/order is now autofixable 🎉