Could i get a context photo of where this part is on the board, all the reference designs i can see don't appear to have this part, but i may be looking in the wrong area.
The next thing would be, measure what voltages you have on what remains of the pins, is one a ground, and one a supply rail, etc?, at a guess i would say that is a load switch or a regulator,
Following that you could look at what other chips it connects to, is it powering something, connected to a voltage rail, or connected to a chips I/O, to narrow down what function each pin did.