Revert "Scripts/BoT: removed an unneeded workarround that has become deprecated since the track channeling fix"

This reverts commit 47263fb72c.

src/server/scripts/EasternKingdoms/BastionOfTwilight/boss_theralion_and_valiona.cpp

@@ -564,6 +564,21 @@ class boss_valiona : public CreatureScript
                 }
             }
 
+            void SpellHitTarget(Unit* target, SpellInfo const* spell) override
+            {
+                if (!target)
+                    return;
+
+                switch (spell->Id)
+                {
+                    case SPELL_DEVOURING_FLAMES_TARGETING: // tempoary workarround to fix a core internal focusing issue
+                        me->SetOrientation(me->GetAngle(target));
+                        break;
+                    default:
+                        break;
+                }
+            }
+
             void DoAction(int32 action)
             {
                 switch (action)