Revert "[slang] Add new port (version 10.0)"

[JavierMatosD]

Reverts #50116

@timkpaine unfortunately, I have to revert this PR due to file conflicts with the port shader-slang which places configs in share\slang with the same config names. I'll open another PR that adds the port again, but the configs will need to be renamed.

[BillyONeal]

In a situation where we can only pick one they search rank about the same :(

[timkpaine]

Should shader-slang configs be similarly renamed? Seems sensible to keep them each to their own names

[JavierMatosD]

Repology says upstream is slang-verilog https://aur.archlinux.org/packages/slang-verilog

[timkpaine]

So sounds like it makes sense, for the avoidance of confusion, to rename both sets

[dg0yt]

FTR the conflict is about the slang CMake package name. The names are chosen by upstreams, not by vcpkg.

It is easy to have separate dirs for different providers of the same name.
But it takes extra hints to choose the desired provider if both are installed.

`

[BillyONeal]

But it takes extra hints to choose the desired provider if both are installed.

Is there an obvious way to do that we could put in usage text?

[dg0yt]

But it takes extra hints to choose the desired provider if both are installed.

Is there an obvious way to do that we could put in usage text?

I'm afraid it is a minefield. (And then there is transitive usage.)

[timkpaine]

What's next? Should I reopen my original PR and someone can apply the necessary changes?

[timkpaine]

What's next? Should I reopen my original PR and someone can apply the necessary changes?

bump