remove unused no-new-func script

Author: archmoj

package.json

@@ -37,7 +37,6 @@
     "cibuild": "npm run empty-dist && npm run preprocess && node tasks/cibundle.js",
     "lint": "eslint --version && eslint .",
     "lint-fix": "eslint . --fix || true",
-    "no-dup-keys": "eslint --no-ignore --no-eslintrc --no-inline-config --rule '{no-dupe-keys: error}' $(find dist -type f -iname '*.js' | grep plotly)",
     "no-es6-dist": "node tasks/no_es6_dist.js",
     "pretest": "node tasks/pretest.js",
     "test-jasmine": "karma start test/jasmine/karma.conf.js",