chore: remove unnecessary babel-runtime

Author: julien-f

package.json

@@ -29,13 +29,11 @@
     "node": ">=6"
   },
   "dependencies": {
-    "@babel/runtime": "^7.0.0-beta.42",
     "readable-stream": "^2.3.5"
   },
   "devDependencies": {
     "@babel/cli": "^7.0.0-beta.42",
     "@babel/core": "^7.0.0-beta.42",
-    "@babel/plugin-transform-runtime": "^7.0.0-beta.42",
     "@babel/preset-env": "^7.0.0-beta.42",
     "babel-core": "^7.0.0-bridge.0",
     "babel-eslint": "^8.2.2",