chore: address Rust 1.89.0 clippy lints (#8873)

Author: Chethan-rao

crates/euclid_macros/src/inner/knowledge.rs

@@ -301,35 +301,6 @@ impl Parse for Rule {
     }
 }
 
-#[derive(Clone)]
-enum Scope {
-    Crate,
-    Extern,
-}
-
-impl Parse for Scope {
-    fn parse(input: syn::parse::ParseStream<'_>) -> syn::Result<Self> {
-        let lookahead = input.lookahead1();
-        if lookahead.peek(Token![crate]) {
-            input.parse::<Token![crate]>()?;
-            Ok(Self::Crate)
-        } else if lookahead.peek(Token![extern]) {
-            input.parse::<Token![extern]>()?;
-            Ok(Self::Extern)
-        } else {
-            Err(lookahead.error())
-        }
-    }
-}
-
-impl Display for Scope {
-    fn fmt(&self, f: &mut Formatter<'_>) -> std::fmt::Result {
-        match self {
-            Self::Crate => write!(f, "crate"),
-            Self::Extern => write!(f, "euclid"),
-        }
-    }
-}
 #[derive(Clone)]
 struct Program {
     rules: Vec<Rc<Rule>>,

crates/router/src/core/payments.rs

@@ -784,10 +784,11 @@ where
             payment_data = match connector_details {
                 ConnectorCallType::PreDetermined(ref connector) => {
                     #[cfg(all(feature = "dynamic_routing", feature = "v1"))]
-                    let routable_connectors =
-                        convert_connector_data_to_routable_connectors(&[connector.clone()])
-                            .map_err(|e| logger::error!(routable_connector_error=?e))
-                            .unwrap_or_default();
+                    let routable_connectors = convert_connector_data_to_routable_connectors(
+                        std::slice::from_ref(connector),
+                    )
+                    .map_err(|e| logger::error!(routable_connector_error=?e))
+                    .unwrap_or_default();
                     let schedule_time = if should_add_task_to_process_tracker {
                         payment_sync::get_sync_process_schedule_time(
                             &*state.store,

crates/router/src/core/user.rs

@@ -400,12 +400,12 @@ pub async fn connect_account(
             logger::info!(?welcome_email_result);
         }
 
-        return Ok(ApplicationResponse::Json(
+        Ok(ApplicationResponse::Json(
             user_api::ConnectAccountResponse {
                 is_email_sent: magic_link_result.is_ok(),
                 user_id: user_from_db.get_user_id().to_string(),
             },
-        ));
+        ))
     } else {
         Err(find_user
             .err()