build: remove entt library

include/entt/stl/algorithm.hpp

@@ -1,22 +0,0 @@
-#ifndef ENTT_STL_ALGORITHM_HPP
-#define ENTT_STL_ALGORITHM_HPP
-
-/*! @cond ENTT_INTERNAL */
-#if __has_include(<entt/ext/stl/algorithm.hpp>)
-#    include <entt/ext/stl/algorithm.hpp>
-#else
-#    include <algorithm>
-
-namespace entt::stl {
-
-using std::all_of;
-using std::any_of;
-using std::find_if;
-using std::none_of;
-using std::sort;
-
-} // namespace entt::stl
-#endif
-/*! @endcond */
-
-#endif