Remove some broken link

[jokosusilo]

Hey, i just checked this repo and find some of link are broken.

• Kaliber - https://github.com/robbinfellow/kaliber
  This link is broken because the repo has been removed

• edX Sass and CSS Style Guide - https://github.com/edx/ux-pattern-library/wiki/Styleguide:-Sass-&-CSS
  This guide has been deprecated, see https://github.com/edx/ux-pattern-library/wiki/Styleguide:-General

So, can I create a PR to remove that link or you'll remove it by yourself? 😄

[tandavas]

Sure! Go ahead and create a PR. Thank you for the heads up! 🎉

[tandavas]

Thank you again!

[jokosusilo]

You're welcome 🎉