Remove the following screws from the front of the logic board:

Two 23.7 mm T10 screws

Four 7.4 mm T10 screws

One 20.8 mm T25 spacer screw

One captive T10 screw

This screw is beneath a hole in the logic board. You'll need a fixed screwdriver or the 60 mm extension from an iFixit driver kit to reach it.