title: Many "Emulator unknown emulator - xxxx [null]"s are redundantly shown in android studio
body: <p>this is more of a benign bug in android studio. Whenever I wake my computer from sleep or hibernate the connection between the emulator and android studio is not proper and I have to restart the emulator and try again, so as a result of that (I think) all the dead emulators are always shown in the listing when trying to run the app.</p>
  
  <p>And FYI I don't usually restart/shutdown my computer (once in 10 days or so). I was just wondering if there was a way to fix this bug without having to restart the computer.</p>
  
  <p><a href="https://i.stack.imgur.com/0bo8U.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/0bo8U.png" alt="Dead Emulators"></a></p>
  
  <p><a href="https://i.imgur.com/9zmpK6l.png" rel="nofollow noreferrer">Screenshot of problem</a></p>
  
  <p>Thanks in advance!</p>