Remove variation in instructions for applying LGPLv3
Remove variation in instructions for applying LGPLv3

Leaving only the option described in https://www.gnu.org/licenses/gpl-howto.html

Following from discussion at https://github.com/benbalter/licensee/pull/113#r78846987
eogas/choosealicense.com,github/choosealicense.com,eogas/choosealicense.com,github/choosealicense.com,eogas/choosealicense.com,github/choosealicense.com