Remove movement inertia

I'm learning Unity development with the tutorial 2D Game Development Walkthrough. I'm adapting its scripts to my development and I have a problem: when I stop pressing left or right key cursor, my hero still moves a little until he stops.

This is the script I'm using:

 public class PlayerControl : MonoBehaviour
 {
     [HideInInspector]
     public bool facingRight = true;            // For determining which way the player is currently facing.
 
     public float moveForce = 365f;            // Amount of force added to move the player left and right.
     public float maxSpeed = 5f;                // The fastest the player can travel in the x axis.
 
     private Animator anim;                    // Reference to the player's animator component.
 
     void Awake()
     {
         // Setting up references.
         anim = GetComponent<Animator>();
     }
 
     // Update is called once per frame
     void Update()
     {
 
     }
 
     void FixedUpdate()
     {
         // Cache the horizontal input.
         float h = Input.GetAxis("Horizontal");
 
         // The Speed animator parameter is set to the absolute value of the horizontal input.
         anim.SetFloat("Speed", Mathf.Abs(h));
 
         // If the player is changing direction (h has a different sign to velocity.x) or hasn't reached maxSpeed yet...
         if (h * rigidbody2D.velocity.x < maxSpeed)
             // ... add a force to the player.
             rigidbody2D.AddForce(Vector2.right * h * moveForce);
 
         // If the player's horizontal velocity is greater than the maxSpeed...
         if (Mathf.Abs(rigidbody2D.velocity.x) > maxSpeed)
             // ... set the player's velocity to the maxSpeed in the x axis.
             rigidbody2D.velocity = new Vector2(Mathf.Sign(rigidbody2D.velocity.x) * maxSpeed, rigidbody2D.velocity.y);
 
         // If the input is moving the player right and the player is facing left...
         if (h > 0 && !facingRight)
             // ... flip the player.
             Flip();
         // Otherwise if the input is moving the player left and the player is facing right...
         else if (h < 0 && facingRight)
             // ... flip the player.
             Flip();
     }
 
     void Flip()
     {
         // Switch the way the player is labelled as facing.
         facingRight = !facingRight;
 
         // Multiply the player's x local scale by -1.
         Vector3 theScale = transform.localScale;
         theScale.x *= -1;
         transform.localScale = theScale;
     }
 }

My hero has a RigidBody 2D with the same properties as in the 2D Tower Defence sample.

I would like to have gravity, but I don't like to have inertia or maybe a little inertia.

How can I remove this inertia?