title: Atom editor regex expression to remove brackets from each time of text
body: <p><code>Atom 1.40.0</code></p>
  
  <p>I am using atom and I have about 1000 lines of text. I want to remove just the open and closed brackets from this line of text. And I also want to remove the text and just keep the parts inside the brackets. I would like to use a regex to do this.</p>
  
  <p>Case 1:
  <code>alamo Gulf Coast Railroad (AGCR) (MMAX)</code>
  to this:
  <code>alamo Gulf Coast Railroad</code></p>
  
  <p>Case 2
  <code>alamo Gulf Coast Railroad (AGCR) (MMAX)</code>
  to this:
  <code>AGCR MMAX</code></p>
  
  <p>Thanks advance,</p>