title: Remove an entire child from Firebase using Swift
body: <p>I'd like to write a function to remove an entire child from Firebase. I'm using XCode 10 and swift 3+.</p>
  
  <p>I have all the user info of the child I'd like to delete so I assume the best call would be to iterate through every child and test for the matching sub child value but it would be great if there was a faster way.
  Thanks for the help!</p>
  
  <p>Heres what I'd like to delete</p>
  
  <p><a href="https://i.stack.imgur.com/cRJLF.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/cRJLF.png" alt="enter image description here"></a></p>
  
  <p>I assume testing for epoch time then removing the whole node would be ideal. Also not sure how to do this</p>