[clang] Fix up UNSUPPORTED line in test originally set in #218572 and #218617 for rdar://185749574. (PR #218651)

[Balázs Benics via cfe-commits]

https://github.com/steakhal approved this pull request.

Thanks. Lets put an end to this.

https://github.com/llvm/llvm-project/pull/218651