[llvm] [GVN] Move `ValueTable` out of `GVN.h` (NFC) (PR #226233)

[Antonio Frighetto via llvm-commits]

================
@@ -33,6 +33,7 @@
 //
 //===----------------------------------------------------------------------===//
 
+#include "llvm/Transforms/Scalar/GVNSink.h"
----------------
antoniofrighetto wrote:

Nitpicking here, IIRC clang-format used to order this alphabetically (i.e., should be after `#include "llvm/Transforms/Scalar/GVNExpression.h"`); seems to be no longer the case? (Same above in GVNHoist.cpp).

https://github.com/llvm/llvm-project/pull/226233