ocamldoc: remove an obsolete test
ocamldoc: remove an obsolete test

The odoc_fhtml file required by this test seems to have been part of
the ocamldoc distribution sometime in the distant past (see
27934ab79a7ee3a62e78c3bfea489d0def8ff7e2 from 2002) but I can't find
traces of it in the git history of the compiler distribution.

gerdstolpmann/ocaml,gerdstolpmann/ocaml,gerdstolpmann/ocaml,gerdstolpmann/ocaml,gerdstolpmann/ocaml