vlib: remove deprecated map{} usages as well as deprecated functions (#11035)

vlib/x/json2/any_test.v

@@ -1,7 +1,7 @@
 import x.json2
 
 const (
-	sample_data = map{
+	sample_data = {
 		'int':  json2.Any(int(1))
 		'i64':  json2.Any(i64(128))
 		'f32':  json2.Any(f32(2.0))
@@ -10,7 +10,7 @@ const (
 		'str':  json2.Any('test')
 		'null': json2.Any(json2.null)
 		'arr':  json2.Any([json2.Any('lol')])
-		'obj':  json2.Any(map{
+		'obj':  json2.Any({
 			'foo': json2.Any(10)
 		})
 	}

vlib/x/json2/json2.v

@@ -48,7 +48,7 @@ pub fn (f Any) as_map() map[string]Any {
 		}
 		return mp
 	}
-	return map{
+	return {
 		'0': f
 	}
 }

vlib/x/json2/json2_test.v

@@ -153,7 +153,7 @@ fn (mut u User) from_json(an json2.Any) {
 
 fn (u User) to_json() string {
 	// TODO: derive from field
-	mut mp := map{
+	mut mp := {
 		'age': json2.Any(u.age)
 	}
 	mp['nums'] = u.nums.map(json2.Any(it))
@@ -252,7 +252,7 @@ fn test_struct_in_struct() {
 */
 fn test_encode_map() {
 	expected := '{"one":1,"two":2,"three":3,"four":4}'
-	numbers := map{
+	numbers := {
 		'one':   json2.Any(1)
 		'two':   json2.Any(2)
 		'three': json2.Any(3)

vlib/x/json2/scanner.v

@@ -50,7 +50,7 @@ const (
 	// list of valid unicode escapes aside from \u{4-hex digits}
 	valid_unicode_escapes     = [`b`, `f`, `n`, `r`, `t`, `\\`, `"`, `/`]
 	// used for transforming escapes into valid unicode (eg. n => \n)
-	unicode_transform_escapes = map{
+	unicode_transform_escapes = {
 		98:  `\b`
 		102: `\f`
 		110: `\n`