Build LEDE without IPv6

@Borromini Where on the page you linked did you find a more comprehensive list of packages that can be removed to save space? I couldn't find any on the whole page, and once more the question comes up in another thread Can I strip the IPv6 out with the imagebuilder?, what can be removed, with IPv6 support being one of the proposals. I'm now trying to collect bits and pieces of information, in order to update