There are only two choices - take them off one by one or take them all off together using the reset to factory defaults option (called 'reset device' on the PW).
If you decide to use the factory reset, be aware that this will remove all personal data from the PW, including wi-fi settings etc. and may also deregister the device from your account. You would literally have to start from scratch again.
Only you can decide which option will cause you more work/hassle.
If you decide to use the factory reset, be aware that this will remove all personal data from the PW, including wi-fi settings etc. and may also deregister the device from your account. You would literally have to start from scratch again.
Only you can decide which option will cause you more work/hassle.