To remove paired devices on a Mac® computer, follow these steps:
Removing paired devices on a Mac®
With your Mac® turned on, click the Apple® icon (menu) in the upper left-hand corner of the screen
In the Apple® menu, choose "System Preferences..."
under the internet & wireless section, click on the bluetooth® icon
Choose a device from the left-hand column and click the "-" button to remove it from the list
Click on the "Remove" button in the pop-up screen to finalise the removal of the chosen device