doc: remove external analysis badges

Author: JCPedroza

README.md

@@ -1,7 +1,6 @@
 # JavaScript Algorithms & Data Structures
 
 [![license MIT][1]][2] [![code stile: standard][3]][4] [![build status][9]][10]
-[![codacy code quality][5]][6] [![codefactor code quality][7]][8]
 
 This is a living notebook, created to:
   * Practice JavaScript, algorithms & data structures, unit testing, git, etc.
@@ -99,10 +98,6 @@ requests are always welcome!
 [2]: https://en.wikipedia.org/wiki/MIT_License
 [3]: https://img.shields.io/badge/code_style-standard-brightgreen.svg
 [4]: https://standardjs.com
-[5]: https://app.codacy.com/project/badge/Grade/bfbdad3f96c94ce793e9453745d95fd7
-[6]: https://www.codacy.com/gh/JCPedroza/algorithms-and-data-structures-js/dashboard?utm_source=github.com&utm_medium=referral&utm_content=JCPedroza/algorithms-and-data-structures-js&utm_campaign=Badge_Grade
-[7]: https://www.codefactor.io/repository/github/jcpedroza/algorithms-and-data-structures-js/badge
-[8]: https://www.codefactor.io/repository/github/jcpedroza/algorithms-and-data-structures-js
 [9]: https://img.shields.io/endpoint.svg?url=https%3A%2F%2Factions-badge.atrox.dev%2Fjcpedroza%2Falgorithms-and-data-structures-js%2Fbadge%3Fref%3Dmain&style=flat
 [10]: https://actions-badge.atrox.dev/jcpedroza/algorithms-and-data-structures-js/goto?ref=main