fix:polaris-rust clippy

Author: chuntaojun

src/core/config/consumer.rs

@@ -13,10 +13,8 @@
 // CONDITIONS OF ANY KIND, either express or implied. See the License for the
 // specific language governing permissions and limitations under the License.
 
-use std::collections::HashMap;
-
 use serde::Deserialize;
-
+use std::collections::HashMap;
 
 #[derive(Deserialize, Debug)]
 #[serde(rename_all = "camelCase", deny_unknown_fields)]

src/core/plugin/cache.rs

@@ -83,7 +83,6 @@ pub trait ResourceCache: Plugin {
 #[derive(Default)]
 pub struct NoopResourceCache {}
 
-
 impl Plugin for NoopResourceCache {
     fn init(&mut self) {
         todo!()

src/core/plugin/connector.rs

@@ -91,7 +91,6 @@ pub trait Connector: Plugin {
 #[derive(Default)]
 pub struct NoopConnector {}
 
-
 impl Plugin for NoopConnector {
     fn init(&mut self) {
         todo!()