[stubs] StringToNumberStub --> StringToNumber builtin.

src/code-stubs.h

Index: src/code-stubs.h
diff --git a/src/code-stubs.h b/src/code-stubs.h
index 7cda04087d3ed03fdac8aec550935fe0c0c68437..d651b2e624983105b41a1e39b2578ed09f8e4ad7 100644
--- a/src/code-stubs.h
+++ b/src/code-stubs.h
@@ -47,7 +47,6 @@ namespace internal {
   V(SubString)                              \
   V(ToNumber)                               \
   V(NonNumberToNumber)                      \
-  V(StringToNumber)                         \
   V(ToString)                               \
   V(ToName)                                 \
   V(ToObject)                               \
@@ -3233,15 +3232,6 @@ class NonNumberToNumberStub final : public PlatformCodeStub {
   DEFINE_PLATFORM_CODE_STUB(NonNumberToNumber, PlatformCodeStub);
 };
 
-class StringToNumberStub final : public PlatformCodeStub {
- public:
-  explicit StringToNumberStub(Isolate* isolate) : PlatformCodeStub(isolate) {}
-
-  DEFINE_CALL_INTERFACE_DESCRIPTOR(TypeConversion);
-  DEFINE_PLATFORM_CODE_STUB(StringToNumber, PlatformCodeStub);
-};
-
-
 class ToStringStub final : public PlatformCodeStub {
  public:
   explicit ToStringStub(Isolate* isolate) : PlatformCodeStub(isolate) {}