gnu: Remove ocaml4.07-re.

* gnu/packages/ocaml.scm (ocaml4.07-re): Remove variable.
(ocaml-re)[properties]: Remove variant.

Change-Id: Ib3cf5188737579908e945bd49617b6d717da4250

gnu/packages/ocaml.scm

@@ -4521,7 +4521,6 @@ (define-public ocaml-re
      (list ocaml-seq))
     (native-inputs
      `(("ounit" ,ocaml-ounit)))
-    (properties `((ocaml4.07-variant . ,(delay ocaml4.07-re))))
     (home-page "https://github.com/ocaml/ocaml-re/")
     (synopsis "Regular expression library for OCaml")
     (description "Pure OCaml regular expressions with:
@@ -4534,18 +4533,6 @@ (define-public ocaml-re
 @end enumerate")
     (license license:expat)))
 
-(define-public ocaml4.07-re
-  (package-with-ocaml4.07
-    (package
-      (inherit ocaml-re)
-      (arguments
-       `(#:phases
-         (modify-phases %standard-phases
-           (add-after 'unpack 'fix-dune-version
-             (lambda _
-               (delete-file "dune-project"))))))
-      (properties '()))))
-
 (define-public ocaml-ocplib-endian
   (package
     (name "ocaml-ocplib-endian")