Remove Snyk

https://twitter.com/sindresorhus/status/1123986529498664961

readme.md

@@ -57,7 +57,6 @@ You might also like [awesome-nodejs](https://github.com/sindresorhus/awesome-nod
 - [ghub.io](https://ghub.io) - Redirects to the GitHub repo of an npm package.
 - [npm addict](https://npmaddict.com) - Your daily injection of npm packages.
 - [npm discover](http://www.npmdiscover.com) - Discover what packages are commonly used together.
-- [snyk](https://snyk.io) - Find, fix and monitor for known vulnerabilities in npm dependencies.
 
 ### Browser extensions