Remove do-nothing trace traits on primitive types

Source/heap/Visitor.cpp

Index: Source/heap/Visitor.cpp
diff --git a/Source/heap/Visitor.cpp b/Source/heap/Visitor.cpp
index 2df85759e024d154934a461ebcfef1b7d850b5b1..83d5e1ff31038a466a31b012a8455b3be3798f10 100644
--- a/Source/heap/Visitor.cpp
+++ b/Source/heap/Visitor.cpp
@@ -57,13 +57,4 @@ FOR_EACH_TYPED_HEAP(DEFINE_VISITOR_CHECK_MARKER)
 #undef DEFINE_VISITOR_CHECK_MARKER
 #endif
 
-#define DEFINE_DO_NOTHING_TRAIT(type)                  \
-const GCInfo GCInfoTrait<type>::info = {               \
-    doNothingTrace,                                    \
-    0, /* no finalizer method */                       \
-    false                                              \
-};
-
-ITERATE_DO_NOTHING_TYPES(DEFINE_DO_NOTHING_TRAIT)
-
 }