ocaml-sqlexpr is marked for autoremoval from testing

[Debian testing autoremoval watch]

ocaml-sqlexpr 0.5.5-3 is marked for autoremoval from testing on 2018-01-30

It (build-)depends on packages with these RC bugs:
877548: lwt: lwt FTBFS: Error: This variant or record definition does not match 
that of type Unix.open_flag