Removes broken link.

programming-language-resources.md

@@ -35,7 +35,6 @@
     - [Python Cheat Sheet](https://github.com/jwasham/google-interview-university/blob/master/extras/cheat%20sheets/python-cheat-sheet-v1.pdf)
     - [Python in One Video](https://www.youtube.com/watch?v=N4mEzFDjqtA)
     - [Series on 3.4 (video)](https://www.youtube.com/playlist?list=PL6gx4Cwl9DGAcbMi1sH6oAMk4JHw91mC_)
-    - [Zero to Hero (video)](https://www.youtube.com/watch?v=TV9tSHFAFjg)
     - [Statistics for Hackers (video)](https://www.youtube.com/watch?v=Iq9DzN6mvYA)
     - [Faster Python (video)](https://www.youtube.com/watch?v=JDSGVvMwNM8)
     - [CPython Walk (video)](https://www.youtube.com/watch?v=LhadeL7_EIU&list=PLzV58Zm8FuBL6OAv1Yu6AwXZrnsFbbR0S&index=6)