In the basement staircase of my older home (inside my attached garage) I want to eliminate a 3 way switch at the end of a circuit, and install a light fixture near the switch I want to remove - at the bottom of this staircase.

When I removed the cover from this switch I found 4 blue wires, one of them marked with black tape. The 3 way switch itself is very old (circa 1959) with four brass screws, two at the top and two at the bottom.

Can I eliminate this switch, and install a needed light fixture, using these 4 blue wires from this switch?

The switch at the top of the steps is the switch which has power coming into it.