This is not strictly required. However I found when removing the Touch Bar that it necessitated a lot of scraping and force near the Touch ID sensor, thus I advise removing it for protection.

It is quite easy to remove, just be careful with the flex cable as it seems very fragile.

Remove the 4 red screws

Remove the 2 green screws

Remove the black bracket which is now free

Carefully open the laptop lid with the screen at the bottom. The Touch ID sensor should free itself and stay on the screen.