[Heap]: Remove dead code.

NewTuple3 is not used anywhere in the source code.

Bug: v8:9714
Change-Id: Iac3b3c17eafa01f5bb3de12a50afb4da0215e923
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/1801843
Commit-Queue: Victor Gomes <victorgomes@google.com>
Commit-Queue: Ulan Degenbaev <ulan@chromium.org>
Auto-Submit: Victor Gomes <victorgomes@google.com>
Reviewed-by: Ulan Degenbaev <ulan@chromium.org>
Cr-Commit-Position: refs/heads/master@{#63746}

src/heap/factory.cc

@@ -323,17 +323,6 @@ Handle<Tuple2> Factory::NewTuple2(Handle<Object> value1, Handle<Object> value2,
   return result;
 }
 
-Handle<Tuple3> Factory::NewTuple3(Handle<Object> value1, Handle<Object> value2,
-                                  Handle<Object> value3,
-                                  AllocationType allocation) {
-  Handle<Tuple3> result =
-      Handle<Tuple3>::cast(NewStruct(TUPLE3_TYPE, allocation));
-  result->set_value1(*value1);
-  result->set_value2(*value2);
-  result->set_value3(*value3);
-  return result;
-}
-
 Handle<ArrayBoilerplateDescription> Factory::NewArrayBoilerplateDescription(
     ElementsKind elements_kind, Handle<FixedArrayBase> constant_values) {
   Handle<ArrayBoilerplateDescription> result =

src/heap/factory.h

@@ -215,10 +215,6 @@ class V8_EXPORT_PRIVATE Factory {
   Handle<Tuple2> NewTuple2(Handle<Object> value1, Handle<Object> value2,
                            AllocationType allocation);
 
-  // Create a new Tuple3 struct.
-  Handle<Tuple3> NewTuple3(Handle<Object> value1, Handle<Object> value2,
-                           Handle<Object> value3, AllocationType allocation);
-
   // Create a new ArrayBoilerplateDescription struct.
   Handle<ArrayBoilerplateDescription> NewArrayBoilerplateDescription(
       ElementsKind elements_kind, Handle<FixedArrayBase> constant_values);