[turbofan] Remove special JSForInStep and JSForInDone.

src/compiler/js-operator.cc

Index: src/compiler/js-operator.cc
diff --git a/src/compiler/js-operator.cc b/src/compiler/js-operator.cc
index f4f62ac55e8bdbc6b600840631d60ff83588d0f7..c2fea50388eb41c4bae1e46dda249e8ea314bae0 100644
--- a/src/compiler/js-operator.cc
+++ b/src/compiler/js-operator.cc
@@ -415,10 +415,8 @@ CompareOperationHint CompareOperationHintOf(const Operator* op) {
   V(HasProperty, Operator::kNoProperties, 2, 1)             \
   V(TypeOf, Operator::kPure, 1, 1)                          \
   V(InstanceOf, Operator::kNoProperties, 2, 1)              \
-  V(ForInDone, Operator::kPure, 2, 1)                       \
   V(ForInNext, Operator::kNoProperties, 4, 1)               \
   V(ForInPrepare, Operator::kNoProperties, 1, 3)            \
-  V(ForInStep, Operator::kPure, 1, 1)                       \
   V(LoadMessage, Operator::kNoThrow, 0, 1)                  \
   V(StoreMessage, Operator::kNoThrow, 1, 0)                 \
   V(GeneratorRestoreContinuation, Operator::kNoThrow, 1, 1) \