drop serde dep

Cargo.toml

@@ -7,5 +7,4 @@ edition = "2021"
 
 [dependencies]
 libcwtch = "0.4.0"
-serde_json = "1.0"
 chrono = "0.4.19"

src/imp.rs

@@ -3,7 +3,6 @@ use libcwtch::structs::*;
 use libcwtch::CwtchLib;
 use libcwtch::event::{ConversationID, Event};
 
-use serde_json;
 use crate::behaviour::{Behaviour, NewContactPolicy};
 use crate::behaviour::NewContactPolicy::AllowList;