Core/Creatures: Remove resetting of UNIT_FLAG_IMMUNE_TO_PC on combat clearing

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

@@ -10359,10 +10359,8 @@ void Unit::SetInCombatState(bool PvP, Unit* enemy)
         if (enemy)
         {
             if (IsAIEnabled)
-            {
                 creature->AI()->EnterCombat(enemy);
-                RemoveFlag(UNIT_FIELD_FLAGS, UNIT_FLAG_IMMUNE_TO_PC); // unit has engaged in combat, remove immunity so players can fight back
-            }
+
             if (creature->GetFormation())
                 creature->GetFormation()->MemberAttackStart(creature, enemy);
         }
@@ -10403,9 +10401,6 @@ void Unit::ClearInCombat()
     // Player's state will be cleared in Player::UpdateContestedPvP
     if (Creature* creature = ToCreature())
     {
-        if (creature->GetCreatureTemplate() && creature->GetCreatureTemplate()->unit_flags & UNIT_FLAG_IMMUNE_TO_PC)
-            SetFlag(UNIT_FIELD_FLAGS, UNIT_FLAG_IMMUNE_TO_PC); // set immunity state to the one from db on evade
-
         ClearUnitState(UNIT_STATE_ATTACK_PLAYER);
         if (HasFlag(UNIT_DYNAMIC_FLAGS, UNIT_DYNFLAG_TAPPED))
             SetUInt32Value(UNIT_DYNAMIC_FLAGS, creature->GetCreatureTemplate()->dynamicflags);