[llvm] [memprof] Remove getFullSchema in MemProfTest.cpp (PR #90072)

[Snehasish Kumar via llvm-commits]

https://github.com/snehasish approved this pull request.

lgtm.

I guess a subsequent patch is going to move the static method out of PortableMemInfoBlock?

https://github.com/llvm/llvm-project/pull/90072