title: How to disable remove icon in ui-select2
body: <p>Is there a way to disable the icons in ui-select2? I am using ui-select2 in angular js, which is like adding tags while posting a question on stackoverflow:</p>
  
  <p><img src="https://i.stack.imgur.com/avc1e.png" alt="enter image description here"></p>
  
  <p>How can I disable remove icon conditionally?</p>