[clang] [KeyInstr][Clang][NFC] Don't set -dwarf-use-key-instructions (PR #144115)

[Jeremy Morse via cfe-commits]

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@@ -8,8 +8,14 @@
 // HELP-NOT: key-instructions
 
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jmorse wrote:

Not an issue with this patch but, with no positive HELP: prefixes, this check passes vacuously.

https://github.com/llvm/llvm-project/pull/144115