Update index.md

Author: ccbogel

docs/index.md

@@ -40,8 +40,6 @@ If you like QualCoder and found it useful for your work. Please leave a review o
 
 <https://alternativeto.net/software/qualcoder>
 
-Many studies have been completed with QualCoder <https://qualcoder.wordpress.com/studies-using-qualcoder/>
-
 If you like QualCoder a lot, or have developed a novel use for it, please write an article about QualCoder.
 
 ## Current binary releases