remove depth from config.toml and fix style issues

Signed-off-by: Efertone <efertone@pm.me>

config/config.toml

@@ -26,6 +26,3 @@ ignore-hidden=true
 
 # print sizes in powers of 1000 (e.g., 1.1G)
 iso=true
-
-# Depth to show
-depth=1

src/config.rs

@@ -63,7 +63,7 @@ impl Config {
     pub fn get_depth(&self, options: &ArgMatches) -> usize {
         if let Some(v) = options.value_of("depth") {
             if let Ok(v) = v.parse::<usize>() {
-                return v
+                return v;
             }
         }
 
@@ -151,7 +151,7 @@ pub fn get_config() -> Config {
 mod tests {
     #[allow(unused_imports)]
     use super::*;
-    use clap::{Command, Arg, ArgMatches};
+    use clap::{Arg, ArgMatches, Command};
 
     #[test]
     fn test_conversion() {