More work on moving engine into dlmalloc heap

luprex/core/wrap/wrap-set.hpp

@@ -5,17 +5,8 @@
 #include <set>
 
 namespace eng {
-template<class T>
-using less = std::less<T>;
 template<class K, class C=std::less<K>>
-using set = std::set<K, C, EngAllocator<K>>;
+using set = std::set<K, C, eng::allocator<K>>;
 } // namespace eng
 
-namespace drv {
-template<class T>
-using less = std::less<T>;
-template<class K, class C=std::less<K>>
-using set = std::set<K, C, DrvAllocator<K>>;
-} // namespace drv
-
 #endif // WRAP_SET_HPP