[llvm] [LLVM] Include simple_ilist.h in preference to ilist.h. NFC. (PR #96644)

[Jay Foad via llvm-commits]

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@@ -22,7 +22,7 @@
 #include "llvm/ADT/IntervalMap.h"
 #include "llvm/ADT/PointerIntPair.h"
 #include "llvm/ADT/SmallVector.h"
-#include "llvm/ADT/ilist.h"
+#include "llvm/ADT/simple_ilist.h"
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jayfoad wrote:

Sorry. I was trying to do IWYU by hand but it is more complicated than I realized. I will abandon this patch.

https://github.com/llvm/llvm-project/pull/96644