Bond Integration built-in app. How to remove device?

I have a workaround to get rid of any extra child devices.
You will need this custom driver (just for the delete child command): [RELEASE] Z-Wave Universal Device Scanner

Remove the device from the Bond App FIRST.
Go to the child you wish to remove and copy the DNI into a notepad or something handy.
Change the parent Bond Bridge device to this custom driver.
Fill in the child DNI to the box below the Delete Child command, and press the button.
Switch the driver back to "Bond Bridge"

If the device is still setup in the Bond mobile app, I believe it will eventually get added back automatically or if you press configure on the Bond Bridge device (once set back to the Bond Bridge driver).

As for the names not updating as stated above by someone else, just put your desired "friendly" name in the "Label" box in the child. The "Name" is locked because the childs are created as component device.