Nothing I can see needs to be removed.
For reference:
Batteries you have to remove for boardsort to accept boards.
Mercury relays soldered directly to a board means the whole board needs to be treated as hazmat (don't send to boardsort), socketed can be removed just be careful.
Info on batteries and mercury relaysSteel should be removed, unless doing so will damage the board, because it usually just brings the value of the board down and you aren't going to get the best grade.
Aluminum is like steel but it is worth more so you just have to make the determination for yourself whether it's worth your time to remove.
Wires should also be removed, a lot of these don't even need to be cut if you can figure out the connection.
that's all I can think of...