The referenced script on this behavior is missing!

I removed the missing script, and copied the done_player controller code into player controller, but it still does not work. I also found a page on the missing script, but I don't understand it. I also have code for done_player controller, it has something in it about $$anonymous$$onoBehavior.

 using UnityEngine;
 using System.Collections;
 
 [System.Serializable]
 public class Done_Boundary 
 {
     public float x$$anonymous$$in, x$$anonymous$$ax, z$$anonymous$$in, z$$anonymous$$ax;
 }
 
 public class Done_PlayerController : $$anonymous$$onoBehaviour
 {
     public float speed;
     public float tilt;
     public Done_Boundary boundary;
     
     public GameObject shot;
     public Transform shotSpawn;
     public float fireRate;
     
     private float nextFire;
     
     void Update ()
     {
         if (Input.GetButton("Fire1") && Time.time > nextFire) 
         {
             nextFire = Time.time + fireRate;
             Instantiate(shot, shotSpawn.position, shotSpawn.rotation);
             audio.Play ();
         }
     }
     
     void FixedUpdate ()
     {
         float moveHorizontal = Input.GetAxis ("Horizontal");
         float moveVertical = Input.GetAxis ("Vertical");
         
         Vector3 movement = new Vector3 (moveHorizontal, 0.0f, moveVertical);
         rigidbody.velocity = movement * speed;
         
         rigidbody.position = new Vector3
             (
                 $$anonymous$$athf.Clamp (rigidbody.position.x, boundary.x$$anonymous$$in, boundary.x$$anonymous$$ax), 
                 0.0f, 
                 $$anonymous$$athf.Clamp (rigidbody.position.z, boundary.z$$anonymous$$in, boundary.z$$anonymous$$ax)
                 );
         
         rigidbody.rotation = Quaternion.Euler (0.0f, 0.0f, rigidbody.velocity.x * -tilt);
     }
 }