Revert "Added SlimSocial for Facebook."

Author: Joker

categories/social_network.md

@@ -114,7 +114,6 @@ App Name                   | Describe                  | Major Language
 :------------------------: | :------------------------ | :------------------------: | :------------------------: 
 [Shadowsocks](https://github.com/shadowsocks/shadowsocks-android) | A Shadowsocks client for Android | Java | [![Get it on Google Play](http://i.imgur.com/7sq06lr.png)](https://play.google.com/store/apps/details?id=com.github.shadowsocks)
 [Skooter](https://github.com/aayushranaut/skooterapp) | An anonymous social network | Java | [![Get it on Google Play](http://i.imgur.com/7sq06lr.png)](https://play.google.com/store/apps/details?id=com.skooterapp)
-[SlimSocial for Facebook](https://github.com/rignaneseleo/SlimSocial-for-Facebook) | Light version of Facebook. Light not only in weight but also in the use. | Java | [![Get it on Google Play](http://i.imgur.com/7sq06lr.png)](https://play.google.com/store/apps/details?id=it.rignanese.leo.slimfacebook)
 
 ###T
 App Name                   | Describe                  | Major Language             | Download