title: How to remove an item from a list in Scala having only its index?
body: <p>I have a list as follows:</p>
  
  <pre><code>val internalIdList: List[Int] = List()
  
  internalIdList = List(11, 12, 13, 14, 15)
  </code></pre>
  
  <p>From this list would remove the third element in order to obtain:</p>
  
  <pre><code>internalIdList = List(11, 12, 14, 15)
  </code></pre>
  
  <p>I can not use a <code>ListBuffer</code>, are obliged to maintain the existing structure.
  How can I do?</p>
  
  <p>Thanks to all</p>