cargo: Clean up serde dependencies

There is no need to include serde_derive separately,
as it can be specified as serde feature instead.

Signed-off-by: Maksym Pavlenko <pavlenko.maksym@gmail.com>

vm-migration/src/lib.rs

@@ -3,9 +3,6 @@
 // SPDX-License-Identifier: Apache-2.0 AND BSD-3-Clause
 //
 
-#[macro_use]
-extern crate serde_derive;
-
 use crate::protocol::MemoryRangeTable;
 use anyhow::anyhow;
 use serde::{Deserialize, Serialize};

vm-migration/src/protocol.rs

@@ -4,6 +4,7 @@
 //
 
 use crate::{MigratableError, VersionMapped};
+use serde::{Deserialize, Serialize};
 use std::io::{Read, Write};
 use versionize::{VersionMap, Versionize, VersionizeResult};
 use versionize_derive::Versionize;