Apply clippy suggestion

instant-segment/src/lib.rs

@@ -167,7 +167,7 @@ impl<'a> SegmentState<'a> {
     }
 }
 
-#[derive(Clone)]
+#[derive(Clone, Default)]
 pub struct Search {
     candidates: Vec<Candidate>,
     result: Vec<String>,
@@ -185,15 +185,6 @@ impl Search {
     }
 }
 
-impl Default for Search {
-    fn default() -> Self {
-        Self {
-            candidates: Vec::new(),
-            result: Vec::new(),
-        }
-    }
-}
-
 #[derive(Clone, Copy, Debug, Default)]
 struct Candidate {
     len: usize,