Adapt opam files to be usable with dune-release

Author: Leonidas-from-XIV

findlib.opam

@@ -1,7 +1,7 @@
 opam-version: "2.0"
 maintainer:   "Anil Madhavapeddy <[email protected]>"
-homepage:     "http://projects.camlcity.org/projects/findlib.html"
-bug-reports:  "https://gitlab.camlcity.org/gerd/lib-findlib/issues"
+homepage:     "https://github.com/dune-universe/lib-findlib"
+bug-reports:  "https://github.com/dune-universe/lib-findlib/issues"
 dev-repo: "git+https://github.com/dune-universe/lib-findlib.git"
 build: [
   [ "env" "FINDLIB_PREFIX=%{lib}%" "dune" "build" "-p" name "-j" jobs ]
@@ -20,6 +20,3 @@ interpreting the META files, so that it is very easy to use libraries
 in programs and scripts.
 """
 authors: "Gerd Stolpmann <[email protected]>"
-url {
-  src: "git+https://github.com/dune-universe/lib-findlib#duniverse-1.8.1"
-}

ocamlfind.opam

@@ -1,7 +1,7 @@
 opam-version: "2.0"
 maintainer:   "Thomas Gazagnaire <[email protected]>"
-homepage:     "http://projects.camlcity.org/projects/findlib.html"
-bug-reports:  "https://gitlab.camlcity.org/gerd/lib-findlib/issues"
+homepage:     "https://github.com/dune-universe/lib-findlib"
+bug-reports:  "https://github.com/dune-universe/lib-findlib/issues"
 dev-repo: "git+https://github.com/dune-universe/lib-findlib.git"
 build: [
   [ "env" "FINDLIB_PREFIX=%{lib}%" "dune" "build" "-p" name "-j" jobs ]
@@ -28,6 +28,3 @@ properties of libraries. There is also a tool (ocamlfind) for
 interpreting the META files, so that it is very easy to use libraries
 in programs and scripts."""
 authors: "Gerd Stolpmann <[email protected]>"
-url {
-  src: "git+https://github.com/dune-universe/lib-findlib#duniverse-1.8.1"
-}