deps: remove unused babel-cli dependency

Author: goto-bus-stop

package.json

@@ -13,7 +13,6 @@
     "sistyl": "^1.0.0"
   },
   "devDependencies": {
-    "babel-cli": "^6.5.1",
     "babel-plugin-external-helpers": "^6.5.0",
     "babel-preset-es2015": "^6.9.0",
     "babel-preset-extplug": "^1.0.0",