Fix HIsSmiAndBranch::KnownSuccessorBlock() by deleting it

src/hydrogen-instructions.cc

Index: src/hydrogen-instructions.cc
diff --git a/src/hydrogen-instructions.cc b/src/hydrogen-instructions.cc
index 79c7964d15492ead5d3312a5ef53ad82770c1154..0ad84fe9e59f4d6ae84b426332fd041e352fea30 100644
--- a/src/hydrogen-instructions.cc
+++ b/src/hydrogen-instructions.cc
@@ -3099,17 +3099,6 @@ bool HIsStringAndBranch::KnownSuccessorBlock(HBasicBlock** block) {
 }
 
 
-bool HIsSmiAndBranch::KnownSuccessorBlock(HBasicBlock** block) {
-  if (FLAG_fold_constants && value()->IsConstant()) {
-    *block = HConstant::cast(value())->HasSmiValue()
-        ? FirstSuccessor() : SecondSuccessor();
-    return true;
-  }
-  *block = NULL;
-  return false;
-}
-
-
 bool HIsUndetectableAndBranch::KnownSuccessorBlock(HBasicBlock** block) {
   if (FLAG_fold_constants && value()->IsConstant()) {
     *block = HConstant::cast(value())->IsUndetectable()