Remove unused Sass/SCSS setup

- Remove sass and concurrently dependencies (31 packages)
- Remove SCSS files and src/styles directory
- Remove Sass-related npm scripts (build-css, watch-css, dev-with-css)
- Remove CSS source map file
- Keep hand-crafted style.css which is actually being used

package-lock.json

@@ -1,11 +1,11 @@
 {
-  "name": "icewatch",
+  "name": "great-lakes-ice-report",
   "version": "1.0.0",
   "lockfileVersion": 3,
   "requires": true,
   "packages": {
     "": {
-      "name": "icewatch",
+      "name": "great-lakes-ice-report",
       "version": "1.0.0",
       "license": "MIT",
       "dependencies": {