Once you have access to the internals, remove the wires and wifi card connected to the motherboard.

To remove the upper wire connection, flip the tab holding the cable onto the motherboard, then remove it gently.

To remove the wire strand connection, flip the tab shown and then remove the wire strand.

Do you not use a metal spudger as shown in the photo. A nylon spudger is the appropriate tool for the job and will not damage the motherboard as a metal spudger might do.