Yes, the shader files may be found there.
But why are you getting rid of the SCP? 
I already have a better machine for playing SPC on. This other computer I'm uninstalling it from is 6 years old and has been around with me from 2004. It's doesn't even support the Shader Model for normal mapping.
I'm trying to free it some space and the SPC stuff is a memory hog. Yeah, I know it has only 60GB of space but I don't blame it for the amount of oomph it gave me. (And yes, I've considered upgrading, but considering the kind of hard drive it needs is now hard to find/2.5" IDE and the price I've spent maintaining...well,
just take a look at how long I've kept it, I'd think I'm better off with the new PC I use.)