--[ Kali Cleaner ]

What does it :
- It cleans apt cache.
- Remove old config files.
- Remove old kernels.
- Empty every trashes.

 Save the script on your Desktop. Make it executable and clean kali linux.

root@kali:~/Desktop# ./kali_cleaner.sh

Download:
https://github.com/MasterButcher/kali-cleaner

or you can use command in terminal:
git clone https://github.com/MasterButcher/kali-cleaner.git