Hey Dan,
the tile with the tag name and description is added automatically to each tag archive via the template file. I’ve prepared a customized file for you where the respective code has been removed: please download this archive, unzip it, and upload the resulting file into the theme folder (/wp-content/themes/Ikebana/) via ftp, replacing the existing files when prompted.
Let me know in case the file works in an unintended way!
Sincerely,
Andrii / Satori Studio