Refactor cleanup steps to use cleanup_lxc function (#9354)

install/sabnzbd-install.sh

@@ -15,8 +15,8 @@ update_os
 
 msg_info "Installing Dependencies"
 $STD apt install -y \
-    par2 \
-    p7zip-full
+  par2 \
+  p7zip-full
 msg_ok "Installed Dependencies"
 
 PYTHON_VERSION="3.13" setup_uv
@@ -66,9 +66,4 @@ msg_ok "Created Service"
 
 motd_ssh
 customize
-
-msg_info "Cleaning up"
-$STD apt -y autoremove
-$STD apt -y autoclean
-$STD apt -y clean
-msg_ok "Cleaned"
+cleanup_lxc