[1.5.3 Embers]Psi-Machine allows learning of obsolete talent

[Mel]

When you give Yeti Muscles to the Psi-Machine, you can still learn the Field Control tree (which IIRC no longer exists on any class), Piercing Sight (strictly inferior to the new Heightened Senses), and talents from the old Mobility tree (which no longer exists either). Choosing to learn the Mobility tree correctly gives the new tree so maybe the Psi-Machine should be updated to include talents from the new Survival and Mobility trees like escorts were.