[BinaryPlatforms]: Remove overzealous verification

[staticfloat]

Some of these verifications are a little over-zealous. We don't
actually need cuda or march verification in here, since these will
be primarily externally-driven tags.

[vtjnash]

Why is it Marching here anyways? In the Makefile, there's a gcc flag name combined from -m arch that sources this name, but thus that name doesn't make sense outside of assembly a gcc command line.

[staticfloat]

These march tags are what allow us to encode different microarchitectures into Artifacts.tomls, so we can use gcc -march=haswell -mtune=haswell to build an AVX2 version of a library, for instance. They were in here because as I was designing the new Platform type I had them in as part of some tests, but I'm moving this to be more externally driven until the march stuff is more stable.