remove unneeded NODE_ENV=test

Author: TSMMark

package.json

@@ -15,8 +15,8 @@
     "build": "npm run build:babel && npm run build:flow",
     "build:babel": "babel src/ -d lib",
     "build:flow": "flow-copy-source src lib",
-    "ci-test": "NODE_ENV=test npm run build && npm run lint && npm run flow && npm run jest",
-    "test": "NODE_ENV=test npm run build && npm run jest",
+    "ci-test": "npm run build && npm run lint && npm run flow && npm run jest",
+    "test": "npm run build && npm run jest",
     "jest": "jest --testMatch **/test/*.js --verbose",
     "test-update": "npm run test -- -u"
   },