Merge pull request #2339 from atom/aw/remove-cross-env

Remove cross-env

Author: smashwilson

package-lock.json

@@ -83,7 +83,6 @@
     "chai": "4.2.0",
     "chai-as-promised": "7.1.1",
     "codecov": "3.5.0",
-    "cross-env": "6.0.2",
     "cross-unzip": "0.2.1",
     "dedent-js": "1.0.1",
     "electron-devtools-installer": "2.2.4",