Drop TODO 3.0 as we cannot get rid of legacy nids in 3.0
Drop TODO 3.0 as we cannot get rid of legacy nids in 3.0

Fixes #14393

Reviewed-by: Paul Dale <ddec78389666b4f7c9b4d110380c848489a3e4aa@openssl.org>
(Merged from https://github.com/openssl/openssl/pull/14703)

openssl/openssl,openssl/openssl,openssl/openssl,openssl/openssl,openssl/openssl,openssl/openssl