Your question doesn't make any sense to me.
To my knowledge, the only VSL product that uses GPU audio so far is MIR 3D Pro. So yes, you can uninstall MIR 3D Pro and Synchron Player will still work. But to me it seems kinda silly to do that when the GPU audio is turned off by default in MIR 3D Pro and you have to turn it on, so I don't know why you would use the nuclear option of deleting MIR 3D Pro when you can simply turn off the very prominent switch in the MIR 3D Pro user interface to turn off the GPU audio, which you would have had to turn on yourself to be active.
It looks from the forum that VSL is going to be integrating some kind of GPU audio processing into the Synchron player in the future, but I think it is only in beta test versions at the moment. Maybe you are part of the beta program for Synchron Player and you have a beta test version that supports GPU audio, and then I don't know, but I would assume there is a prominent switch to turn it off in the Synchron Player somewhere without having to uninstall anything, like there is in MIR 3D Pro.