[runtime] Remove useless IN builtin.

test/cctest/compiler/test-run-inlining.cc

 // Copyright 2014 the V8 project authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "src/v8.h"
 
 #include "src/frames-inl.h"
 #include "test/cctest/compiler/function-tester.h"
 
 using namespace v8::internal;
@@ skipping 397 matching lines @@
       "  function bar(s,t) { return %_IsSmi(x); };"
       "  return bar;"
       "})();",
       kInlineFlags);
 
   InstallAssertInlineCountHelper(CcTest::isolate());
   T.CheckCall(T.true_value(), T.Val(12), T.Val(4));
 }
 
 
-TEST(InlineIntrinsicIsNonNegativeSmi) {
-  FunctionTester T(
-      "(function () {"
-      "  var x = 42;"
-      "  function bar(s,t) { return %_IsNonNegativeSmi(x); };"
-      "  return bar;"
-      "})();",
-      kInlineFlags);
-
-  InstallAssertInlineCountHelper(CcTest::isolate());
-  T.CheckCall(T.true_value(), T.Val(12), T.Val(4));
-}
-
-
 TEST(InlineIntrinsicIsArray) {
   FunctionTester T(
       "(function () {"
       "  var x = [1,2,3];"
       "  function bar(s,t) { return %_IsArray(x); };"
       "  return bar;"
       "})();",
       kInlineFlags);
 
   InstallAssertInlineCountHelper(CcTest::isolate());
@@ skipping 124 matching lines @@
       "    if (x == 1) return bar(42);"
       "    return x;"
       "  }"
       "  return foo;"
       "})();",
       kInlineFlags);
 
   InstallAssertInlineCountHelper(CcTest::isolate());
   T.CheckCall(T.Val(42), T.Val(1));
 }