update electron version

package.json

@@ -77,7 +77,6 @@
     "webpack": "~4.10.2",
     "webpack-cli": "~3.0.0",
     "worker-loader": "^2.0.0",
-    "@antv/hierarchy": "~0.4.0",
     "hard-source-webpack-plugin": "~0.13.1"
   },
   "scripts": {