Updated ci-check

Author: piotrwitek

package.json

@@ -4,8 +4,7 @@
         "all-contributors-cli": "5.4.0"
     },
     "scripts": {
-        "ci-check": "npm run readme:generate && npm run check-git-clean",
-        "check-git-clean": "if output=$(git status --porcelain) && [ -z '$output' ]; then echo 'Success!'; else echo '\n>>> Please check CONTRIBUTING.md to learn how to properly amend README.md <<<\n'; fi",
+        "ci-check": "npm run readme:generate",
         "readme:generate": "node generate-readme",
         "contributors:add": "all-contributors add",
         "contributors:generate": "all-contributors generate"