Empty sectors: how to get rid of?

[Apollon]

After defeating a rebellion, I inherited a bunch of sectors that the rebels created. Those sectors contain no planets (the planets that they contained during the rebel occupation have reverted to their original sectors after I reconquered them). Now those empty sectors are cluttering my navbar.
Is there a way to get rid of them? Saving and reloading didn't help.

 

[Wolfgang I]

Not a real fix but I use the planet view instead of the sector view.
Works good enough for me especially with the tiny outliner rejiggered mod.

 

[GreatSword]

Can you set a focus in the sector menu [F4]? Then deactivate "show sectors with active focus" in the outliner (open options by clicking the cog in the upper right of the outliner)

 

[Apollon]

Thank you both for your ideas. Those are good workarounds, but I'm more interested in a way to take these empty sectors completely out of existance.