Remove SuiteSparse_wrapper and winclang patch

[ViralBShah]

Thanks to SuiteSparse.jl now in its own repo, we have been able to rapidly move and get rid of a bunch of old stuff.

Fix https://github.com/JuliaLang/SuiteSparse.jl/issues/11
Fix JuliaLang/LinearAlgebra.jl#764

This is all possible thanks to @Gnimuc!

[ViralBShah]

We'll adopt this change starting with SuiteSparse 5.10.1. This PR will be updated to use the newer version once we merge it in Yggdrasil: JuliaPackaging/Yggdrasil#3099

[ViralBShah]

@Gnimuc When we want to use a newer version of SuiteSparse, do we need to make any changes to SuiteSparse.jl's auto-generated wrappers. IIRC, we do check for version numbers in the code - so that may be necessary.

There really should be no changes between 5.8.1 and 5.10.1, but it gives us a clean new version to adopt in Julia 1.7, where we can stop shipping the wrappers.

[Gnimuc]

If the new version of SuiteSparse_jll doesn't have new C macro definitions that Clang.jl cannot currently handle, then we're good. Even if that happens, we can simply add them to this list and add our own patch or just ignore them. We should re-run the generator script whenever the version of SuiteSparse_jll is bumped.

[ViralBShah]

I am just in the process of bumping it all, and just merged 5.10.1 into Yggdrasil. This way we can keep making new releases if we run into issues, without disrupting older Julia releases (1.6 and earlier). Most of the new work is in GraphBLAS, so I don't expect any problems.