make this compile

CMakeLists.txt

@@ -1,6 +1,6 @@
 cmake_minimum_required(VERSION 3.20)
 include(cmake/color.cmake)
-set(BLT_VERSION 2.1.8)
+set(BLT_VERSION 2.1.9)
 
 set(BLT_TARGET BLT)
 

include/blt/std/binary_tree.h

@@ -289,26 +289,6 @@ namespace blt
                 return {};
             }
         
-            std::optional<V> search_min(const K& min)
-            {
-                auto point = nodes.begin();
-                while (point != nodes.end())
-                {
-                    if (point->children == 0)
-                        return {};
-                    auto parent = point;
-                    ++point;
-                    auto is_min = point->k < parent->k;
-                    if (k >= parent->k)
-                    {
-                        if (is_min)
-                            point = skip_children(point);
-                    }
-                    
-                }
-                return {};
-            }
-        
         private:
             auto skip_children(typename std::vector<node_t>::iterator begin)
             {