Core/AI: No longer do strange things when told to enter evade mode while there's no need to do so, typically by terrible legacy code.

(cherry picked from commit 163f44c1b0)

src/server/game/Grids/ObjectGridLoader.cpp

@@ -265,10 +265,7 @@ void ObjectGridStoper::Visit(CreatureMapType &m)
         iter->GetSource()->RemoveAllDynObjects();
         iter->GetSource()->RemoveAllAreaTriggers();
         if (iter->GetSource()->IsInCombat())
-        {
             iter->GetSource()->CombatStop();
-            iter->GetSource()->AI()->EnterEvadeMode();
-        }
     }
 }