dune is not build dep because reasons

Author: rr0gi

devkit.opam

@@ -14,7 +14,7 @@ build: [
 ]
 depends: [
   "ocaml" {>= "4.05.0"}
-  "dune" {build & >= "1.5"}
+  "dune" {>= "1.5"}
   ("extlib" {>= "1.7.0"} | "extlib-compat" {>= "1.7.0"})
   "ounit"
   "camlzip"
@@ -34,4 +34,3 @@ depopts: [
   "gperftools"
   "jemalloc"
 ]
-version: "1.1"