title: Turn off Xcode's unused variable warnings while typing
body: <p>I'm sick to death of Xcode's prolific use of live "unused variable" warnings while I am typing. I keep thinking I have an error in my syntax, stop what I'm doing, check the warning, only to see it's an unused variable warning.</p>
  
  <p><a href="https://i.stack.imgur.com/W3Jrb.png" rel="noreferrer"><img src="https://i.stack.imgur.com/W3Jrb.png" alt="enter image description here"></a></p>
  
  <p>Of course it's unused, I <em>just</em> typed it!</p>
  
  <p>I don't mind the compile-time unused variable warnings, those are very useful, but I hate the live warnings as I'm typing code.</p>
  
  <p>Is there any way I can turn off this warning completely everywhere, either app-wide or for an entire project?</p>