Fix quest Redeeming the Dead (9685) and remove the core script

src/server/game/Scripting/ScriptLoader.cpp

@@ -272,7 +272,6 @@ void AddSC_ironforge();
 void AddSC_isle_of_queldanas();
 void AddSC_loch_modan();
 void AddSC_redridge_mountains();
-void AddSC_silvermoon_city();
 void AddSC_silverpine_forest();
 void AddSC_stormwind_city();
 void AddSC_stranglethorn_vale();