fixup! controllers::version::metadata: Use json! macro to simplify JSON serialization code

Author: Turbo87

src/controllers/version/metadata.rs

@@ -7,7 +7,7 @@
 use crate::controllers::frontend_prelude::*;
 
 use crate::models::VersionOwnerAction;
-use crate::views::{EncodableDependency, EncodablePublicUser, EncodableVersion};
+use crate::views::{EncodableDependency, EncodableVersion};
 
 use super::{extract_crate_name_and_semver, version_and_crate};
 
@@ -37,8 +37,8 @@ pub fn authors(req: &mut dyn RequestExt) -> EndpointResult {
     // Because the API is not used anymore after RFC https://github.com/rust-lang/rfcs/pull/3052.
 
     Ok(req.json(&json!({
-        "users": vec![],
-        "meta": { "names": vec![] },
+        "users": [],
+        "meta": { "names": [] },
     })))
 }