[InstCombine] Remove unused includes (NFC) (#114709)

Identified with misc-include-cleaner.

Author: kazutakahirata

llvm/lib/Transforms/InstCombine/InstCombineCompares.cpp

@@ -12,7 +12,6 @@
 
 #include "InstCombineInternal.h"
 #include "llvm/ADT/APSInt.h"
-#include "llvm/ADT/ScopeExit.h"
 #include "llvm/ADT/SetVector.h"
 #include "llvm/ADT/Statistic.h"
 #include "llvm/Analysis/CaptureTracking.h"

llvm/lib/Transforms/InstCombine/InstCombineNegator.cpp

@@ -43,7 +43,6 @@
 #include <cassert>
 #include <cstdint>
 #include <functional>
-#include <type_traits>
 #include <utility>
 
 using namespace llvm;