[llvm] [VPlan] Migrate VPBuilder to VPInsertPt fully (NFC) (PR #209764)

[Florian Hahn via llvm-commits]

================
@@ -25,13 +25,13 @@
 #define LLVM_TRANSFORMS_VECTORIZE_LOOPVECTORIZATIONPLANNER_H
 
 #include "VPlan.h"
-#include "llvm/ADT/SmallSet.h"
----------------
fhahn wrote:

this is unrelated, same as // namespace?

https://github.com/llvm/llvm-project/pull/209764