fix(ci): remove helper

Author: elevatebart

package.json

@@ -51,7 +51,6 @@
     "babel-cli": "^6.26.0",
     "babel-core": "6.26.3",
     "babel-eslint": "^8.2.6",
-    "babel-helper-vue-jsx-merge-props": "^2.0.3",
     "babel-jest": "^23.6.0",
     "babel-plugin-external-helpers": "^6.22.0",
     "babel-plugin-syntax-jsx": "^6.18.0",