Update about.md (#1353)

Author: yasinatagv

mppm/about.md

@@ -10,14 +10,6 @@ Use Multiplayer Play Mode to test multiplayer functionality within the Unity Edi
 
 Multiplayer Play Mode version 1.1.0 is compatible with Unity Editor versions 6000.0.3f1 or later.
 
-## Compatibility
-
-Multiplayer Play Mode version 1.1.0 is compatible with Unity Editor versions 6000.0.3f1 or later.
-
-## Compatibility
-
-Multiplayer Play Mode version 1.1.0 is compatible with Unity Editor versions 6000.0.3f1 or later.
-
 ## Multiplayer Play Mode terminology
 
 The following have specific meaning in relation to Multiplayer Play Mode: