@mattj678,
Please note, the wpDiscuz uses the other font for the rating only. In all other cases, it uses the wpDiscuz uses the default font. You can delete it just navigate to the \wp-content/plugins/wpdiscuz/themes/default/style.css file find and delete the following line(line 86):
@font-face { font-family: 'square721_cn_btroman'; src: url('css/fonts/sqr721c-webfont.eot'); src: url('css/fonts/sqr721c-webfont.eot?#iefix') format('embedded-opentype'), url('css/fonts/sqr721c-webfont.woff2') format('woff2'), url('css/fonts/sqr721c-webfont.woff') format('woff'), url('css/fonts/sqr721c-webfont.ttf') format('truetype'), url('css/fonts/sqr721c-webfont.svg#svgFontName') format('svg'); }
Also, you can disable the “Load Font Awesome css lib”. It located in the Dashboard > Comments > wpDiscuz > Settings >Styles and Colors admin page.
More info here: https://wpdiscuz.com/docs/wpdiscuz-7/plugin-settings/styles-and-colors/#load-font-awesome-css-lib