Fix clippy lints

Author: tpoliaw

src/graphql.rs

@@ -836,8 +836,7 @@ mod tests {
     async fn denied_scan_request(#[future(awt)] auth_env: TestAuthEnv) {
         let query = r#"mutation{ scan(beamline: "i22", visit: "cm12345-3") { scanNumber }}"#;
         let token = Some(Authorization(
-            Bearer::decode(&HeaderValue::from_str(&format!("Bearer token_value")).unwrap())
-                .unwrap(),
+            Bearer::decode(&HeaderValue::from_str("Bearer token_value").unwrap()).unwrap(),
         ));
         let auth = auth_env
             .server
@@ -873,8 +872,7 @@ mod tests {
     async fn authorized_scan_request(#[future(awt)] auth_env: TestAuthEnv) {
         let query = r#"mutation{ scan(beamline: "i22", visit: "cm12345-3") { scanNumber }}"#;
         let token = Some(Authorization(
-            Bearer::decode(&HeaderValue::from_str(&format!("Bearer token_value")).unwrap())
-                .unwrap(),
+            Bearer::decode(&HeaderValue::from_str("Bearer token_value").unwrap()).unwrap(),
         ));
         let auth = auth_env
             .server

src/numtracker.rs

@@ -189,7 +189,7 @@ mod tests {
             F: for<'f> FnOnce(&'f Path) -> io::Result<()>,
         {
             let root = tempdir().unwrap();
-            init(&root.as_ref()).unwrap();
+            init(root.as_ref()).unwrap();
             Self(NumTracker::for_root_directory(Some(&root)).unwrap(), root)
         }
     }