[clang] [OpenMP] Support for `nothing` in `metadirective` (PR #73690)

[Sandeep Kosuri via cfe-commits]

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@@ -12,7 +12,6 @@ int mixed() {
     x=d;
   }
 
-// expected-error at +2 {{#pragma omp nothing' cannot be an immediate substatement}}
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sandeepkosuri wrote:

But I don't see such a restriction for `nothing` in spec 5.1, is it really required ?

https://github.com/llvm/llvm-project/pull/73690