[compiler-rt] [compiler-rt][pgo] Guard coroutine profile test on <coroutine> header availability (PR #214958)

[Mircea Trofin via llvm-commits]

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@@ -1,3 +1,4 @@
+// REQUIRES: coroutines
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mtrofin wrote:

This was actually fixed in #214593 but probably @jinhuang1102 forgot to push it. I just did. I would just remove the `REQUIRES` here, since the solution in #214593 addresses that.

https://github.com/llvm/llvm-project/pull/214958