[intrinsics] Remove unused %_RegExpExec and %_NumberToString.

src/interpreter/interpreter-intrinsics.cc

Index: src/interpreter/interpreter-intrinsics.cc
diff --git a/src/interpreter/interpreter-intrinsics.cc b/src/interpreter/interpreter-intrinsics.cc
index 6fae3896ea1a36f399f8449e5a749c6a4598be1c..3893b027b1a2ae361c0bc63a4d16e4f1bf016926 100644
--- a/src/interpreter/interpreter-intrinsics.cc
+++ b/src/interpreter/interpreter-intrinsics.cc
@@ -242,18 +242,6 @@ Node* IntrinsicsHelper::HasProperty(Node* input, Node* arg_count,
                              CodeFactory::HasProperty(isolate()));
 }
 
-Node* IntrinsicsHelper::NumberToString(Node* input, Node* arg_count,
-                                       Node* context) {
-  return IntrinsicAsStubCall(input, context,
-                             CodeFactory::NumberToString(isolate()));
-}
-
-Node* IntrinsicsHelper::RegExpExec(Node* input, Node* arg_count,
-                                   Node* context) {
-  return IntrinsicAsStubCall(input, context,
-                             CodeFactory::RegExpExec(isolate()));
-}
-
 Node* IntrinsicsHelper::SubString(Node* input, Node* arg_count, Node* context) {
   return IntrinsicAsStubCall(input, context, CodeFactory::SubString(isolate()));
 }