[lld] [lld] Remove shell requirements from tests (PR #156510)

[Sam Clegg via llvm-commits]

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@@ -1,4 +1,5 @@
-# REQUIRES: shell
+# Unsupported on Windows due to maximum path length limitations.
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sbc100 wrote:

Oh I see, yes it does seem like the issue is that `tar` itself was failing to unpack the archive.   I guess cbe62f2 is correct and this comment does make sense.

https://github.com/llvm/llvm-project/pull/156510