title: Swift 3 mode has been deprecated
body: <p>In Xcode 10.1 whenever I build my app I get the warning</p>
  
  <blockquote>
    <p>Swift 3 mode has been deprecated and will be removed in a later
    version of Xcode. Please migrate "My Appp" to Swift 4.2 using  "Convert > To Current Swift Syntax…" in the Edit menu. (in target 'My App')</p>
  </blockquote>
  
  <p>How can I suppress the warning?</p>
  
  <p>I tried to convert but conversion fails and besides that my app depends on some Pods / libraries that I can not convert any way.</p>
  
  <p>Is there a way to stop seeing the warning?</p>