Fix lints

src/adapters/monitors/cloudwatch.rs

@@ -134,7 +134,7 @@ impl CloudWatch {
             }
             Err(err) => {
                 println!("Error querying cloudwatch metrics: {:?}", err);
-                return 0;
+                0
             }
         }
     }

src/adapters/monitors/mod.rs

@@ -1,7 +1,4 @@
-use crate::{
-    pipeline::ResponseMonitor,
-    stats::{Group, Observation},
-};
+use crate::{pipeline::ResponseMonitor, stats::Observation};
 use async_trait::async_trait;
 use miette::Result;
 use tokio::{pin, time::interval};

src/pipeline/mod.rs

@@ -1,5 +1,4 @@
 use crate::adapters::{batch_observations, EngineController};
-use crate::stats::Group;
 use crate::{
     adapters::{repeat_query, DecisionEngine, Ingress, Monitor},
     metrics::ResponseStatusCode,