Remove unused dependency

src/config.rs

@@ -1,7 +1,6 @@
 use std::{fs::File, path::Path};
 
 use serde::Deserialize;
-use simple_error::bail;
 use tokio::signal::unix::Signal;
 
 use crate::Result;
@@ -70,7 +69,7 @@ impl FileConfigProvider {
                 return config;
             }
         }
-        bail!("No config file found");
+        Err("No config file found".into())
     }
 }