Merge pull request #1573 from mariosangiorgio/patch-2

Removed Programming Pearls by Bentley (broken link)

free-programming-books.md

@@ -272,7 +272,6 @@ Original Source: [Free Programming books](http://stackoverflow.com/revisions/392
 * [Linked List Problems](http://cslibrary.stanford.edu/105/LinkedListProblems.pdf) (PDF)
 * [Planning Algorithms](http://planning.cs.uiuc.edu/)
 * [Problems on Algorithms (Second Edition)](http://larc.unt.edu/ian/books/free/poa.pdf), University of North Texas (PDF)
-* [Programming Pearls](http://www.cs.bell-labs.com/cm/cs/pearls/) - Jon Bentley
 * [Purely Functional Data Structures](http://www.cs.cmu.edu/~rwh/theses/okasaki.pdf) (PDF)
 * [Sequential and parallel sorting algorithms](http://www.inf.fh-flensburg.de/lang/algorithmen/sortieren/algoen.htm)
 * [Text Algorithms](http://igm.univ-mlv.fr/~mac/REC/text-algorithms.pdf) (PDF)