[clang] [compiler-rt] [llvm] [InstrProf] Remove PGO name reading and writing (PR #214134)

[Owen Rodley via llvm-commits]

orodley wrote:

> > This may need a compiler-rt side change, too (and potentially llvm-profdata)
> 
> ​probably not a change, but besides checking that compiler-rt tests pass (which CI / bots will check), can you check there's a test in compiler-rt that synthesizes a profile and loads it correctly? For the "loading", probably just telling clang to dump IR and checking that profiles are there should be good enough, if you have to write one.

I think this should be covered with the current set of tests, LMK if anything is missing.

https://github.com/llvm/llvm-project/pull/214134