[regexp] Remove IsRegExp intrinsic

test/cctest/interpreter/test-interpreter-intrinsics.cc

Index: test/cctest/interpreter/test-interpreter-intrinsics.cc
diff --git a/test/cctest/interpreter/test-interpreter-intrinsics.cc b/test/cctest/interpreter/test-interpreter-intrinsics.cc
index 3cb2beffd456e1624633018f04881291651bf2a9..70051253cca22fc04d4752559da6bfe25bae8ae3 100644
--- a/test/cctest/interpreter/test-interpreter-intrinsics.cc
+++ b/test/cctest/interpreter/test-interpreter-intrinsics.cc
@@ -114,27 +114,6 @@ TEST(IsJSProxy) {
            *helper.Invoke(helper.NewObject("new Proxy({},{})")));
 }
 
-TEST(IsRegExp) {
-  HandleAndZoneScope handles;
-
-  InvokeIntrinsicHelper helper(handles.main_isolate(), handles.main_zone(),
-                               Runtime::kInlineIsRegExp);
-  Factory* factory = handles.main_isolate()->factory();
-
-  CHECK_EQ(*factory->false_value(),
-           *helper.Invoke(helper.NewObject("new Date()")));
-  CHECK_EQ(*factory->false_value(),
-           *helper.Invoke(helper.NewObject("(function() {})")));
-  CHECK_EQ(*factory->false_value(), *helper.Invoke(helper.NewObject("([1])")));
-  CHECK_EQ(*factory->false_value(), *helper.Invoke(helper.NewObject("({})")));
-  CHECK_EQ(*factory->true_value(), *helper.Invoke(helper.NewObject("(/x/)")));
-  CHECK_EQ(*factory->false_value(), *helper.Invoke(helper.Undefined()));
-  CHECK_EQ(*factory->false_value(), *helper.Invoke(helper.Null()));
-  CHECK_EQ(*factory->false_value(),
-           *helper.Invoke(helper.NewObject("'string'")));
-  CHECK_EQ(*factory->false_value(), *helper.Invoke(helper.NewObject("42")));
-}
-
 TEST(IsTypedArray) {
   HandleAndZoneScope handles;