Remove an object from an array and destroy it (C#)

Hey Guys, i'm with a problem here. I just can't hold the last object of an array(not his index, but the object attached to this index) and destroy it. I find out how to remove it from the array but I don't managed to remove it from the scene. If you guys want, here's the code ( Some variable names are in portuguese );

 using UnityEngine;

using System.Collections; using System.Collections.Generic;

public class Teste : MonoBehaviour {

 public List<GameObject> objetos;
 public int deslocamento;
 public GameObject prefabObjeto;

 // Use this for initialization
 void Start () {
 
 objetos = new List<GameObject>();
 
 }
 
 void removerArray (int posicao) {
     
 objetos.RemoveAt (posicao);
 
 }
 
 // Update is called once per frame
 void Update () {
     
 if(Input.GetButtonUp ("Fire1")) 
     {
     deslocamento += 10;
     GameObject newObj;
     newObj = (GameObject)Instantiate (prefabObjeto, transform.position, Quaternion.identity);
     newObj.transform.position = (new Vector3(0 + deslocamento, 30, 0));
     objetos.Add (newObj);
     }
     else if (Input.GetButtonUp("Fire2") && (objetos.Count > 0))
     {
     int ultimoObjeto;
     ultimoObjeto = objetos.Count - 1;
     removerArray(ultimoObjeto);
     }
 
 }

}

Variable meaning in English

objetos = objects. posicao = position. prefabObjeto = objectPrefab. deslocamento = displacement.

Hope yous guys may help me out in this. Thanks from now!

*Sorry for my bad English.