Core/Auras: Removed an unnecessary check.

mode is already checked in the first lines of SPELL_AURA_PHASE's handler.

src/server/game/Spells/Auras/SpellAuraEffects.cpp

@@ -1859,7 +1859,7 @@ void AuraEffect::HandlePhase(AuraApplication const* aurApp, uint8 mode, bool app
 
     // call functions which may have additional effects after chainging state of unit
     // phase auras normally not expected at BG but anyway better check
-    if (apply && (mode & AURA_EFFECT_HANDLE_REAL))
+    if (apply)
     {
         // drop flag at invisibiliy in bg
         target->RemoveAurasWithInterruptFlags(AURA_INTERRUPT_FLAG_IMMUNE_OR_LOST_SELECTION);