How to hide PhpMyAdmin access url
sudo nano /etc/apache2/conf-available/phpmyadmin.conf
Alias /whateveryouwant /usr/share/phpmyadmin
https://www.digitalocean.com/community/questions/how-do-i-change-phpmyadmin-access-url
Remove domain/phpmyadmin link:
sudo unlink /var/www/phpmyadmin