sw/src/game.h: Remove declaration of CommPlayerName,

now conflicting with extern "C" declaration from config.h.
The "extern" itself isn't needed, but this is a good chance for removal.

source/sw/src/game.h

@@ -2222,7 +2222,6 @@ extern SWBOOL ExitLevel;
 extern SWBOOL Warping;
 extern uint8_t CommPlayers;
 extern SWBOOL CommEnabled;
-extern char CommPlayerName[];
 extern short Level;
 extern short Episode;