Fix dict keys copy implementation

src/list/copy.c

@@ -3,33 +3,6 @@
 
 #include "include.h"
 
-static void libcdsb_builtin_init(list_t* x, vnode_t v, vtype t) {
-    lnode_t* node = malloc(sizeof(*node));
-
-    node->next = nullptr;
-    node->prev = nullptr;
-    node->node = v;
-    node->type = t;
-
-    x->first = node;
-    x->last  = node;
-}
-
-
-static void libcdsb_builtin_push(list_t* x, vnode_t v, vtype t) {
-    lnode_t* node = malloc(sizeof(*node));
-
-    node->next = nullptr;
-    node->prev = x->last;
-    node->node = v;
-    node->type = t;
-
-    x->last->next = node;
-    x->last       = node;
-}
-
-/*#####################################################################################################################*/
-
 list_t list_copy(const list_t* s) {
     list_t   x;
     lnode_t* c;