tests: enable test_generic_fn_with_variadics() test (#9944)

vlib/v/tests/generics_test.v

@@ -345,12 +345,15 @@ fn test_generic_struct_print_array_as_field() {
 	assert foo.str() == 'Foo<[]string>{\n    data: []\n}'
 }
 
-/*
-struct Abc{ x int y int z int }
+struct Abc {
+	x int
+	y int
+	z int
+}
 
 fn p<T>(args ...T) {
 	size := sizeof(T)
-	print('p called with size: ${size:3d} | ')
+	print('p called with size: ${size:3} | ')
 	for _, x in args {
 		print(x)
 		print(' ')
@@ -370,7 +373,6 @@ fn test_generic_fn_with_variadics(){
 	p(abc)
 	p('Good', 'morning', 'world')
 }
-*/
 
 struct Context {}
 
@@ -392,24 +394,6 @@ fn test_pass_generic_to_nested_function() {
 	test(mut app)
 }
 
-/*
-struct NestedGeneric {}
-
-fn (ng NestedGeneric) nested_test<T>(mut app T) {
-	app.context = Context {}
-}
-
-fn method_test<T>(mut app T) {
-	ng := NestedGeneric{}
-	ng.nested_test<T>(app)
-}
-
-fn test_pass_generic_to_nested_method() {
-	mut app := App{}
-	method_test(mut app)
-}
-*/
-
 fn generic_return_map<M>() map[string]M {
 	return map{
 		'': M{}