remove newrelic to fix circleci build

package.json

@@ -49,7 +49,6 @@
     "express": "4.16.1",
     "express-http-proxy": "1.1.0",
     "lodash.defaults": "4.0.1",
-    "newrelic": "1.25.4",
     "react-helmet": "5.2.0",
     "scratch-parser": "^5.0.0",
     "scratch-storage": "^0.5.1"