Remove old test

Author: jfecher

tooling/nargo_fmt/src/formatter/expression.rs

@@ -1567,13 +1567,6 @@ mod tests {
         assert_format(src, expected);
     }
 
-    #[test]
-    fn format_old_vector_syntax() {
-        let src = "global x = &[ 1 , 2 , 3 , ] ;";
-        let expected = "global x = @[1, 2, 3];\n";
-        assert_format(src, expected);
-    }
-
     #[test]
     fn format_repeated_array() {
         let src = "global x = [ 1 ; 3 ] ;";