chore(package): remove commentator dep

Author: tusharmath

.travis.yml

@@ -8,7 +8,6 @@ notifications:
 node_js:
   - stable
 before_script:
-   - npm run benchmark | node_modules/.bin/commentator
    - npm run coverage
    - npm run lint
 after_success:

package.json

@@ -27,7 +27,6 @@
     "@types/node": "^9.3.0",
     "benchmark": "^2.1.2",
     "cli-table2": "^0.2.0",
-    "commentator": "^1.0.5",
     "coveralls": "^3.0.0",
     "cz-conventional-changelog": "^2.0.0",
     "ghooks": "^2.0.0",