[llvm] [NFC] Move RemoveRedundantDbgInstrs outside of inner loop in JumpThreading (PR #123008)

[Stephen Tozer via llvm-commits]

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@@ -377,6 +371,13 @@ bool JumpThreadingPass::runImpl(Function &F_, FunctionAnalysisManager *FAM_,
     EverChanged |= Changed;
   } while (Changed);
 
+  // Jump threading may have introduced redundant debug values into BB which
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SLTozer wrote:

```suggestion
  // Jump threading may have introduced redundant debug values into F which
```

https://github.com/llvm/llvm-project/pull/123008