fix(openflow): fix incorrect dev dep

@xen-orchestra/openflow/package.json

@@ -26,7 +26,7 @@
     "@babel/cli": "^7.7.4",
     "@babel/core": "^7.7.4",
     "@babel/preset-env": "^7.7.4",
-    "cross": "^1.0.0",
+    "cross-env": "^7.0.2",
     "rimraf": "^3.0.0"
   },
   "dependencies": {

yarn.lock

@@ -4607,11 +4607,6 @@ cross-spawn@^7.0.0, cross-spawn@^7.0.1, cross-spawn@^7.0.2, cross-spawn@^7.0.3:
     shebang-command "^2.0.0"
     which "^2.0.1"
 
-cross@^1.0.0:
-  version "1.0.0"
-  resolved "https://registry.yarnpkg.com/cross/-/cross-1.0.0.tgz#b155d3719d95e3eb16e51757ed5abc96bee19cfa"
-  integrity sha1-sVXTcZ2V4+sW5RdX7Vq8lr7hnPo=
-
 crypto-browserify@^3.0.0, crypto-browserify@^3.11.0:
   version "3.12.0"
   resolved "https://registry.yarnpkg.com/crypto-browserify/-/crypto-browserify-3.12.0.tgz#396cf9f3137f03e4b8e532c58f698254e00f80ec"