Core/Misc: Fix issues reported by static analysis

Properly fix Coverity defect ID 1227434

src/server/game/Entities/Unit/Unit.cpp

@@ -14173,7 +14173,6 @@ void Unit::ProcDamageAndSpellFor(bool isVictim, Unit* target, uint32 procFlag, u
         uint32 Id = i->aura->GetId();
 
         AuraApplication* aurApp = i->aura->GetApplicationOfTarget(GetGUID());
-        ASSERT(aurApp);
 
         bool prepare = i->aura->CallScriptPrepareProcHandlers(aurApp, eventInfo);