Drop mli files from documentation and default files in mdx stanza
Drop mli files from documentation and default files in mdx stanza

I thought the mli support would make it to 1.6.0 but it did not.
I'm doing in this in a separate commit so it can be reverted later.

Signed-off-by: Nathan Rebours <9d1531e67b3fd717aeb3bdeb8fe4128d946e28e7@gmail.com>

dra27/jbuilder,dra27/jbuilder,janestreet/jbuilder,dra27/jbuilder,janestreet/jbuilder,janestreet/jbuilder,dra27/jbuilder,dra27/jbuilder,janestreet/jbuilder,dra27/jbuilder,janestreet/jbuilder,janestreet/jbuilder