[llvm] Enable exp10 libcall on linux (PR #68736)

[Matt Arsenault via llvm-commits]

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@@ -557,11 +557,6 @@ static void initialize(TargetLibraryInfoImpl &TLI, const Triple &T,
     }
     break;
   case Triple::Linux:
-    // exp10, exp10f, exp10l is available on Linux (GLIBC) but are extremely
-    // buggy prior to glibc version 2.18. Until this version is widely deployed
-    // or we have a reasonable detection strategy, we cannot use exp10 reliably
-    // on Linux.
-    //
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arsenm wrote:

Just update the "Until this version is widely deployed or we have a reasonable detection strategy, we cannot use exp10 reliably" part to something about how this is so old it doesn't matter 

https://github.com/llvm/llvm-project/pull/68736