They removed it for several reasons.
-
Too old to support. The PSVR is almost 9 years old, and Unity 6 cannot support it very well. Keeping it going would cause stability issues for all platforms.
-
Can't add more things to the game. If they keep PSVR going, they can't add more features as they need the PSVR to handle it, which can cause frame issues for it. Unless they find a way around it, it isn't sustainable.
-
Graphical improvements and game improvements. Because the PSVR is limited in graphics, they can't add any more graphical improvements to the game unless they shut down lower end platforms.
