remove as_str() legacy wrappers, callers use .into() directly

swarm-controller/src/main.rs

@@ -719,7 +719,7 @@ fn render(declaration: &swarm_queue_client::wanted::HiveWanted) -> Vec<AgentDecl
         .iter()
         .map(|(agent, wanted)| AgentDeclaration {
             agent: agent.clone(),
-            state: wanted.state.as_str().to_owned(),
+            state: <&str>::from(wanted.state).to_owned(),
         })
         .collect()
 }
@@ -1000,7 +1000,7 @@ async fn get_agents_status(
                             .get(hive)?
                             .agents
                             .get(&row.name)
-                            .map(|w| w.state.as_str().to_owned())
+                            .map(|w| <&str>::from(w.state).to_owned())
                     });
                 }
             }