Vector2 AI help

I found this code for a simple AI, but i would want it in a vecto2 mode so that it wouldnt rotate. Could someone help ?

 #pragma strict
 var target : Transform; //the enemy's target
 var moveSpeed = 3; //move speed
 var rotationSpeed = 3; //speed of turning
  
 var myTransform : Transform; //current transform data of this enemy
  
 function Awake()
 {
     myTransform = transform; //cache transform data for easy access/preformance
 }
  
 function Start()
 {
      target = GameObject.FindWithTag("Player").transform; //target the player
  
 }
  
 function Update () {
     //rotate to look at the player
     myTransform.rotation = Quaternion.Slerp(myTransform.rotation,
     Quaternion.LookRotation(target.position - myTransform.position), rotationSpeed*Time.deltaTime);
  
     //move towards the player
     myTransform.position += myTransform.forward * moveSpeed * Time.deltaTime;
  
  
 }