diff --git a/vlib/x/json2/builder.v b/vlib/x/json2/builder.v
deleted file mode 100644
index 573e85a622..0000000000
--- a/vlib/x/json2/builder.v
+++ /dev/null
@@ -1,78 +0,0 @@
-// Copyright (c) 2019-2020 Alexander Medvednikov. All rights reserved.
-// Use of this source code is governed by an MIT license
-// that can be found in the LICENSE file.
-module json2
-
-// Inserts a string into the map.
-pub fn (mut obj map[string]Any) insert_str(key string, val string) {
-	mut fi := Any{}
-	fi = val
-	obj[key] = fi
-}
-
-// Inserts an int into the map.
-pub fn (mut obj map[string]Any) insert_int(key string, val int) {
-	obj[key] = Any(val)
-}
-
-// Inserts a float into the map.
-pub fn (mut obj map[string]Any) insert_f(key string, val f64) {
-	obj[key] = Any(val)
-}
-
-// Inserts a null into the map.
-pub fn (mut obj map[string]Any) insert_null(key string) {
-	obj[key] = Any(Null{})
-}
-
-// Inserts a bool into the map.
-pub fn (mut obj map[string]Any) insert_bool(key string, val bool) {
-	obj[key] = Any(val)
-}
-
-// Inserts a map into the map.
-pub fn (mut obj map[string]Any) insert_map(key string, val map[string]Any) {
-	obj[key] = Any(val)
-}
-
-// Inserts an array into the map.
-pub fn (mut obj map[string]Any) insert_arr(key string, val []Any) {
-	obj[key] = Any(val)
-}
-
-// Inserts a string into the array.
-pub fn (mut arr []Any) insert_str(val string) {
-	mut fi := Any{}
-	fi = val
-	arr << fi
-}
-
-// Inserts an int into the array.
-pub fn (mut arr []Any) insert_int(val int) {
-	arr << Any(val)
-}
-
-// Inserts a float into the array.
-pub fn (mut arr []Any) insert_f(val f64) {
-	arr << Any(val)
-}
-
-// Inserts a null into the array.
-pub fn (mut arr []Any) insert_null() {
-	arr << Any(Null{})
-}
-
-// Inserts a bool into the array.
-pub fn (mut arr []Any) insert_bool(val bool) {
-	arr << Any(val)
-}
-
-// Inserts a map into the array.
-pub fn (mut arr []Any) insert_map(val map[string]Any) {
-	arr << Any(val)
-}
-
-// Inserts an array into the array.
-pub fn (mut arr []Any) insert_arr(val []Any) {
-	arr << Any(val)
-}