arch: Remove serde usage

With the only struct using it now using Versionize then the serde
dependency can be removed.

Signed-off-by: Rob Bradford <robert.bradford@intel.com>

Cargo.lock

@@ -70,8 +70,6 @@ dependencies = [
  "linux-loader",
  "log",
  "serde",
- "serde_derive",
- "serde_json",
  "thiserror",
  "versionize",
  "versionize_derive",

arch/Cargo.toml

@@ -18,8 +18,6 @@ libc = "0.2.95"
 linux-loader = { version = "0.3.0", features = ["elf", "bzimage", "pe"] }
 log = "0.4.14"
 serde = {version = ">=1.0.27", features = ["rc"] }
-serde_derive = ">=1.0.27"
-serde_json = ">=1.0.9"
 thiserror = "1.0"
 versionize = "0.1.6"
 versionize_derive = "0.1.4"

arch/src/aarch64/gic/gicv3.rs

@@ -60,7 +60,7 @@ pub mod kvm {
         vcpu_count: u64,
     }
 
-    #[derive(Serialize, Deserialize, Versionize)]
+    #[derive(Versionize)]
     pub struct Gicv3State {
         dist: Vec<u32>,
         rdist: Vec<u32>,

arch/src/lib.rs

@@ -10,9 +10,6 @@
 
 #[macro_use]
 extern crate log;
-#[cfg(target_arch = "aarch64")]
-#[macro_use]
-extern crate serde_derive;
 
 use std::fmt;
 use std::result;