Web-based administration tool for MySQL Formula was removed
Last versions were

Recent formula history

Mike McQuaid Delete more files and formulae.
ilovezfs phpmyadmin3: remove references to php53-mcrypt, php54-mcrypt and php55-mcrypt
Mike McQuaid phpmyadmin3: use <<~EOS.
Andy Blyler Fix brew audit --strict issues
NathanJang Added 'Require all granted' to httpd.conf example

Formula code at GitHub