fix: Remove unused import and fix subcommand handling

rust/cli/src/bin/ghostkey.rs

@@ -9,7 +9,6 @@ use ghostkey::commands::{
 };
 use ghostkey_lib::delegate_certificate::DelegateCertificateV1;
 use ghostkey_lib::ghost_key_certificate::GhostkeyCertificateV1;
-use log::info;
 use std::path::Path;
 use std::process;
 use std::fs;
@@ -392,7 +391,7 @@ fn run() -> i32 {
             println!("👻🔑 Welcome to the Freenet Ghost Key Utility!");
             println!("Use 'ghostkey -h' for detailed usage information.");
             println!("Available commands:");
-            for (name, cmd) in matches.get_subcommands() {
+            if let Some((name, cmd)) = matches.subcommand() {
                 println!("  {} - {}", name, cmd.get_about().unwrap_or(""));
             }
             0