llvm-project

11b4f110 - [llvm] Remove unused includes of SmallSet.h (NFC) (#154893)

[llvm] Remove unused includes of SmallSet.h (NFC) (#154893) We just replaced SmallSet<T *, N> with SmallPtrSet<T *, N>, bypassing the redirection found in SmallSet.h. With that, we no longer need to include SmallSet.h in many files.