rm unused import

src/main.rs

@@ -1,7 +1,6 @@
 use std::{error::Error, process::exit};
 use start_db::Starter;
 use log::{error, info};
-use word_entity::Model as WordModel;
 use parse_json::json_object::Word as WordJsonObject;
 // use serde_json::json;
 use tokio;