[runtime] Remove useless IN builtin.

src/compiler/typer.cc

Index: src/compiler/typer.cc
diff --git a/src/compiler/typer.cc b/src/compiler/typer.cc
index d75639c8b7382a43119ba8930ebef874b3c24608..594e4bd61369e5b0caa6830127ab211a698722ed 100644
--- a/src/compiler/typer.cc
+++ b/src/compiler/typer.cc
@@ -1455,7 +1455,6 @@ Bounds Typer::Visitor::TypeJSCallFunction(Node* node) {
 Bounds Typer::Visitor::TypeJSCallRuntime(Node* node) {
   switch (CallRuntimeParametersOf(node->op()).id()) {
     case Runtime::kInlineIsSmi:
-    case Runtime::kInlineIsNonNegativeSmi:
     case Runtime::kInlineIsArray:
     case Runtime::kInlineIsDate:
     case Runtime::kInlineIsTypedArray:
@@ -1757,11 +1756,6 @@ Bounds Typer::Visitor::TypeObjectIsSmi(Node* node) {
 }
 
 
-Bounds Typer::Visitor::TypeObjectIsNonNegativeSmi(Node* node) {
-  return Bounds(Type::Boolean());
-}
-
-
 // Machine operators.
 
 Bounds Typer::Visitor::TypeLoad(Node* node) {