Revert "Core/Auras: Should not remove other targets' aura if it keeps on same phase than caster"

Was causing assertion fails in UnregisterSingleTarget, further research into the issue is needed.

This reverts commit d44dd09737.

Reopens #42

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

@@ -3741,7 +3741,7 @@ void Unit::RemoveNotOwnSingleTargetAuras(uint32 newPhase, bool phaseid)
     for (AuraList::iterator iter = scAuras.begin(); iter != scAuras.end();)
     {
         Aura* aura = *iter;
-        if (aura->GetUnitOwner() != this && !aura->GetUnitOwner()->IsInPhase(this))
+        if (aura->GetUnitOwner() != this && !aura->GetUnitOwner()->IsInPhase(newPhase))
         {
             aura->Remove();
             iter = scAuras.begin();