[compiler-rt] [PGO] Remove calls to `__llvm_orderfile_dump()` in `instrprof-api.c` test (PR #79150)

[Rainer Orth via llvm-commits]

rorth wrote:

> Solaris build succeeded https://lab.llvm.org/buildbot/#/builders/72/builds/2033.

Right: that's the sparcv9 one.  [Solaris/amd64](https://lab.llvm.org/staging/#/builders/94/builds/408) is fine, too.  Thanks.

https://github.com/llvm/llvm-project/pull/79150