Remove Inter font

After struggling to get a Fontsource-provided font to serve correctly in
production using our Vite build process, I decided to re-evaluate our
need to even use a custom font. Turns out it wasn’t doing us enough good
to justify either the development time struggling with this *or* the
user experience cost with custom fonts.

- Switch from Inter to the GitHub/Bootstrap-style native font stack
- Remove Fontsource package

Issue #100 Font isn't loading on production

front-end/package.json

@@ -16,7 +16,6 @@
     "format": "prettier --write src/"
   },
   "dependencies": {
-    "@fontsource-variable/inter": "^5.1.0",
     "@heroicons/vue": "^2.1.5",
     "@vue/eslint-config-airbnb-with-typescript": "^8.0.0",
     "ajv": "^8.17.1",

front-end/src/assets/base.css

@@ -61,7 +61,7 @@
 }
 
 body {
-  font-family: 'Inter Variable', sans-serif;
+  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "Noto Sans", Helvetica, Arial, sans-serif, "Apple Color Emoji", "Segoe UI Emoji";
   font-size: var(--wac--font-size);
   line-height: var(--wac--line-height);
   background-color: white;

front-end/src/main.ts

@@ -1,4 +1,3 @@
-import '@fontsource-variable/inter';
 import './assets/main.css';
 import { createApp } from 'vue';
 import router from './router';