[turbofan] Remove IfExceptionHint from exception projections.

src/compiler/common-operator.h

Index: src/compiler/common-operator.h
diff --git a/src/compiler/common-operator.h b/src/compiler/common-operator.h
index 774441765ca95ad49e123462092cfddf0c0a933f..81bddfdd0b10273f5fe91c2757ca00386e08ebe1 100644
--- a/src/compiler/common-operator.h
+++ b/src/compiler/common-operator.h
@@ -76,20 +76,6 @@ std::ostream& operator<<(std::ostream&, DeoptimizeParameters p);
 
 DeoptimizeParameters const& DeoptimizeParametersOf(Operator const* const);
 
-// Prediction whether throw-site is surrounded by any local catch-scope.
-enum class IfExceptionHint {
-  kLocallyUncaught,
-  kLocallyCaught,
-  kLocallyCaughtForPromiseReject
-};
-
-IfExceptionHint ExceptionHintFromCatchPrediction(
-    HandlerTable::CatchPrediction prediction);
-
-size_t hash_value(IfExceptionHint hint);
-
-std::ostream& operator<<(std::ostream&, IfExceptionHint);
-
 
 class SelectParameters final {
  public:
@@ -195,7 +181,7 @@ class CommonOperatorBuilder final : public ZoneObject {
   const Operator* IfTrue();
   const Operator* IfFalse();
   const Operator* IfSuccess();
-  const Operator* IfException(IfExceptionHint hint);
+  const Operator* IfException();
   const Operator* Switch(size_t control_output_count);
   const Operator* IfValue(int32_t value);
   const Operator* IfDefault();