Revert "Use Roboto for body text"

This reverts commit bd97c3eb3b63a93065e52b77842a0adaf21e3da8.

It turns out that this is actually an issue with the native font
stack in Bootstrap v5. Roboto is still in the font stack, but they
added `system-ui` to the beginning of the list and there is some
issue or inconsistency with the system-ui behavior on Linux.

See: https://github.com/twbs/bootstrap/issues/32447

source/scss/fonts.scss

@@ -8,69 +8,3 @@
        url('../fonts/playfair-display-v21-latin-ext_latin_cyrillic-700.woff2') format('woff2'), /* Chrome 26+, Opera 23+, Firefox 39+ */
        url('../fonts/playfair-display-v21-latin-ext_latin_cyrillic-700.woff') format('woff'); /* Chrome 6+, Firefox 3.6+, IE 9+, Safari 5.1+ */
 }
-
-/* roboto-300 - latin-ext_latin_cyrillic */
-@font-face {
-  font-family: 'Roboto';
-  font-display: swap;
-  font-style: normal;
-  font-weight: 300;
-  src: local(''),
-       url('../fonts/roboto-v20-latin-ext_latin_cyrillic-300.woff2') format('woff2'), /* Chrome 26+, Opera 23+, Firefox 39+ */
-       url('../fonts/roboto-v20-latin-ext_latin_cyrillic-300.woff') format('woff'); /* Chrome 6+, Firefox 3.6+, IE 9+, Safari 5.1+ */
-}
-
-/* roboto-300italic - latin-ext_latin_cyrillic */
-@font-face {
-  font-family: 'Roboto';
-  font-display: swap;
-  font-style: italic;
-  font-weight: 300;
-  src: local(''),
-       url('../fonts/roboto-v20-latin-ext_latin_cyrillic-300italic.woff2') format('woff2'), /* Chrome 26+, Opera 23+, Firefox 39+ */
-       url('../fonts/roboto-v20-latin-ext_latin_cyrillic-300italic.woff') format('woff'); /* Chrome 6+, Firefox 3.6+, IE 9+, Safari 5.1+ */
-}
-
-/* roboto-regular - latin-ext_latin_cyrillic */
-@font-face {
-  font-family: 'Roboto';
-  font-display: swap;
-  font-style: normal;
-  font-weight: 400;
-  src: local(''),
-       url('../fonts/roboto-v20-latin-ext_latin_cyrillic-regular.woff2') format('woff2'), /* Chrome 26+, Opera 23+, Firefox 39+ */
-       url('../fonts/roboto-v20-latin-ext_latin_cyrillic-regular.woff') format('woff'); /* Chrome 6+, Firefox 3.6+, IE 9+, Safari 5.1+ */
-}
-
-/* roboto-italic - latin-ext_latin_cyrillic */
-@font-face {
-  font-family: 'Roboto';
-  font-display: swap;
-  font-style: italic;
-  font-weight: 400;
-  src: local(''),
-       url('../fonts/roboto-v20-latin-ext_latin_cyrillic-italic.woff2') format('woff2'), /* Chrome 26+, Opera 23+, Firefox 39+ */
-       url('../fonts/roboto-v20-latin-ext_latin_cyrillic-italic.woff') format('woff'); /* Chrome 6+, Firefox 3.6+, IE 9+, Safari 5.1+ */
-}
-
-/* roboto-700 - latin-ext_latin_cyrillic */
-@font-face {
-  font-family: 'Roboto';
-  font-display: swap;
-  font-style: normal;
-  font-weight: 700;
-  src: local(''),
-       url('../fonts/roboto-v20-latin-ext_latin_cyrillic-700.woff2') format('woff2'), /* Chrome 26+, Opera 23+, Firefox 39+ */
-       url('../fonts/roboto-v20-latin-ext_latin_cyrillic-700.woff') format('woff'); /* Chrome 6+, Firefox 3.6+, IE 9+, Safari 5.1+ */
-}
-
-/* roboto-700italic - latin-ext_latin_cyrillic */
-@font-face {
-  font-family: 'Roboto';
-  font-display: swap;
-  font-style: italic;
-  font-weight: 700;
-  src: local(''),
-       url('../fonts/roboto-v20-latin-ext_latin_cyrillic-700italic.woff2') format('woff2'), /* Chrome 26+, Opera 23+, Firefox 39+ */
-       url('../fonts/roboto-v20-latin-ext_latin_cyrillic-700italic.woff') format('woff'); /* Chrome 6+, Firefox 3.6+, IE 9+, Safari 5.1+ */
-}

source/scss/main.scss

@@ -24,7 +24,3 @@ figcaption {
   font-style: italic;
   color: #727272;
 }
-
-body {
-  font-family: 'Roboto', sans-serif;
-}