Revert "Added Community Curated Resources"

Author: Aleksandar Todorović (r3bl)

README.md

@@ -325,7 +325,6 @@ This is a list of resources for learning C programming in general, or something
 * [POSIX Threads Programming tutorial](https://computing.llnl.gov/tutorials/pthreads/) (a little dated, but most of it is still valid and useful)
 * [The GNU C Programming Tutorial](http://www.crasseux.com/books/ctut.pdf) (online PDF)
 * [Templating in C](http://blog.pkh.me/p/20-templating-in-c.html)
-* [Programming Community Curated Resources for learning C](https://hackr.io/tutorials/learn-c)
 
 #### Intermediate ####