I have tried to pair my phone with the infotainment system in my van and it failed. I can see the system in the BT list, but the option to 'remove device' is greyed out. I can also see the infotainment system of a car I must have parked next to at some stage. The option to remove that is also greyed out.

How do I remove them from the list?

Is there am app or do I need to edit a config file, if so where is it and what needs to be done?

I have am Aquaris E5 running Ubuntu 15.04 OTA 12.