remove impl Deref for Key

Signed-off-by: iosmanthus <[email protected]>

Author: iosmanthus

src/kv/key.rs

@@ -7,11 +7,7 @@ use crate::kv::codec::{self, BytesEncoder};
 use proptest::{arbitrary::any_with, collection::size_range};
 #[cfg(test)]
 use proptest_derive::Arbitrary;
-use std::{
-    fmt,
-    ops::{Bound, Deref, DerefMut},
-    u8,
-};
+use std::{fmt, ops::Bound, u8};
 use tikv_client_proto::kvrpcpb;
 
 const _PROPTEST_KEY_MAX: usize = 1024 * 2; // 2 KB
@@ -183,17 +179,3 @@ impl fmt::Debug for Key {
         write!(f, "Key({})", HexRepr(&self.0))
     }
 }
-
-impl Deref for Key {
-    type Target = Vec<u8>;
-
-    fn deref(&self) -> &Self::Target {
-        &self.0
-    }
-}
-
-impl DerefMut for Key {
-    fn deref_mut(&mut self) -> &mut Self::Target {
-        &mut self.0
-    }
-}