Revert "Allow control intructions to have side effects."

src/utils.h

Index: src/utils.h
diff --git a/src/utils.h b/src/utils.h
index 50311cfbc22ff02fdb8831daa13d083d50beaec6..4a08319044bf7f0768970f539a1a41ac3f298747 100644
--- a/src/utils.h
+++ b/src/utils.h
@@ -1115,10 +1115,8 @@ class BailoutId {
   static BailoutId Declarations() { return BailoutId(kDeclarationsId); }
   static BailoutId FirstUsable() { return BailoutId(kFirstUsableId); }
   static BailoutId StubEntry() { return BailoutId(kStubEntryId); }
-  static BailoutId PendingMarker() { return BailoutId(kPendingMarkerId); }
 
   bool IsNone() const { return id_ == kNoneId; }
-  bool IsPendingMarker() const { return id_ == kPendingMarkerId; }
   bool operator==(const BailoutId& other) const { return id_ == other.id_; }
 
  private:
@@ -1138,10 +1136,6 @@ class BailoutId {
   // Every compiled stub starts with this id.
   static const int kStubEntryId = 5;
 
-  // For Control instructions we cannot verify the ast_id, since there is no
-  // 1:1 mapping but it corresponds to two simulates for each branch.
-  static const int kPendingMarkerId = 6;
-
   int id_;
 };