fix warnings

crdt-enc-gpgme/src/lib.rs

@@ -1,15 +1,9 @@
 use anyhow::{Context, Error, Result};
 use async_trait::async_trait;
-use crdt_enc::{
-    cryptor::Cryptor,
-    key_cryptor::Keys,
-    storage::Storage,
-    utils::{VersionBytes, VersionBytesRef},
-    CoreSubHandle, Info,
-};
+use crdt_enc::{key_cryptor::Keys, utils::VersionBytes, CoreSubHandle, Info};
 use crdts::{CmRDT, CvRDT, MVReg, Orswot};
-use serde::{de::DeserializeOwned, Deserialize, Serialize};
-use std::{borrow::Cow, convert::Infallible, fmt::Debug, sync::Mutex as SyncMutex};
+use serde::{Deserialize, Serialize};
+use std::{convert::Infallible, fmt::Debug, sync::Mutex as SyncMutex};
 use uuid::Uuid;
 
 pub fn init() {