Remove unnecessary dependency

Author: dqbd

package.json

@@ -23,7 +23,6 @@
     "bluebird": "^3.5.0",
     "chai": "^4.1.1",
     "chai-as-promised": "^7.1.1",
-    "chalk": "^2.4.2",
     "cssnano": "^4.0.0",
     "eslint": "^4.4.1",
     "eslint-plugin-react": "^7.1.0",