Remove Startup message validation from femebe
Remove Startup message validation from femebe

It is more naturally rendered in pgproto, even though it is true that
there are no well-formed first-packets that are so large in the wild.

Signed-off-by: Daniel Farina <3d0f3b9ddcacec30c4008c5e030e6c13a478cb4f@heroku.com>

johto/femebe,uhoh-itsmaciek/femebe