user/supercall.h may be outdated

[YangQi0408]

I included supercall.h when writing my program, and then I got a bunch of compilation errors. After comparing it with the supercall.h in APatch, I found some problems.

For example, This function has never been called, but it's still left here, and an incorrect call to the ver_and_cmd function within it will cause a compilation error. Moreover, it no longer exists in apatch.

There are also some unused variables or removed functions (but they still exist here), please fix them.