Back to my Mac Screensharing - remove screen

I use my MBP to screenshare my MacMini HTPC. Very occasionaly I will have an issue where I am unable to connect over my home network via wifi. I believe the problem is due to my MBP getting confused over which 'screenshare alias' to use.

What I mean by screenshare alias, is that when I right click the screen sharing icon in my dock I have three extra screen sharing aliases as well as my current connection. The three extra unused aliases are named xxx macmin; xxxx macmini (2); and xxxx macmini. The xxx is my original account username and xxxx is my new account name which I changed when I rebuilt my macmini recently.

What I want to do is delete these three unused aliases - they are probably a library or system extension that simply need deleting.

Can anyone advise please.

Thanks

VP