Disable formatting of comments for the janestreet profile.

[tdelvecchio-jsc]

Jane Street's production ocamlformat does not style comment contents. This PR reverts it (mostly*) to the old behavior.

We will eventually want partial styling of comments (in particular, comment code blocks), but most of our existing code gets poorly mangled by the comment styling, in particular due to non-markup being inferred as mark-up, and code blocks which don't have valid ocaml syntax in them.

*Some minor styling, such as trimming of extra blank lines at the beginning and end of multi-line comments, is preserved.

[gpetiot]

@Julow I'm fine with this but does this conflict with the changes you planned for Jane Street in #2314 or #2371?

[Julow]

Thanks, let's merge!

does this conflict with the changes you planned for Jane Street in #2314 or #2371?

I believe that no. This change is still useful for regular and cinaps comments.