Merge pull request #497 from suraj-sella/master

Cleaning up on README

README.md

@@ -129,9 +129,7 @@ According to the ECMAScript specification, the call stack is defined as part of
 - [What is the Call Stack? — Eric Traub](https://www.youtube.com/watch?v=w7QWQlkLY_s)
 - [The Call Stack — Kevin Drumm](https://www.youtube.com/watch?v=Q2sFmqvpBe0)
 - [Understanding JavaScript Execution — Codesmith](https://www.youtube.com/watch?v=Z6a1cLyq7Ac&list=PLWrQZnG8l0E4kd1T_nyuVoxQUaYEWFgcD)
-- [The Ultimate Guide to Execution Contexts, Hoisting, Scopes, and Closures in JavaScript — Tyler McGinnis](https://www.youtube.com/watch?v=Nt-qa_LlUH0)
 - [What the heck is the event loop anyway? — Philip Roberts](https://www.youtube.com/watch?v=8aGhZQkoFbQ)
-- [La PILA DE EJECUCIÓN (Call Stack) de JavaScript — La Cocina del Código](https://www.youtube.com/watch?v=ygA5U7Wgsg8)
 - [How JavaScript Code is executed? ❤️& Call Stack — Akshay Saini](https://www.youtube.com/watch?v=iLWTnMzWtj4&list=PLlasXeu85E9cQ32gLCvAvr9vNaUccPVNP)
 - [Call Stacks - CS50](https://www.youtube.com/watch?v=aCPkszeKRa4)
 - [Learn the JavaScript Call Stack - codecupdev](https://www.youtube.com/watch?v=HXqXPGS96rw)