remove refs

examples/playgroud/main.nub

@@ -11,17 +11,11 @@ struct Name
 struct Human
 {
     age: u64
-    name: &Name
+    name: Name
 }
 
 extern "main" func main(argc: i64, argv: [?]^i8): i64
 {
    let x: [2]Human = [{}, {}]
-
     return 0
-}
-
-func test(x: &Human): &Human
-{
-    return x
 }