title: How can I remove/hide all toolbars from a QMainWindow?
body: <p>I have a third party QMainWindow and I need to embed it in my own QMainWindow (i.e. use it as a normal widget). I know it's not a best practise (to say the least) but I have no other way right now.</p>
  
  <p>I need to hide the third-party window's statusbar, menubar and toolbars.
  I was able to remove the statusbar (setStatusBar(0)) and the menubar (setMenuBar(0)) but I cannot find a way to do the samething with the toolbar area</p>
  
  <p>Is there any way to hide/remove toolbars?</p>