Link doesn't contain the course any more (#10434)

courses/free-courses-bg.md

@@ -1,14 +1,8 @@
 ### Index
 
-* [Android](#android)
 * [PHP](#php)
 
 
-### Android
-
-* [Въведение в Андроид](https://www.youtube.com/playlist?list=PLjsqymUqgpSTXtlngZCXRHEp8-FmDHHfL) - Иван Ванков
-
-
 ### PHP
 
 * [Обектно ориентирано програмиране с PHP](https://www.youtube.com/playlist?list=PL1zMmEDXa_Z8uHtKAl-zSrBFDRNq8JDFG) - Иван Ванков