Remove font-awesome and fomantic icon module (#24471)

Fixes https://github.com/go-gitea/gitea/issues/10410.
This PR removes around 120kB of CSS.

package-lock.json

@@ -29,7 +29,6 @@
         "esbuild-loader": "3.0.1",
         "escape-goat": "4.0.0",
         "fast-glob": "3.2.12",
-        "font-awesome": "4.7.0",
         "jquery": "3.6.4",
         "jquery.are-you-sure": "1.9.0",
         "katex": "0.16.6",
@@ -4945,14 +4944,6 @@
       "integrity": "sha512-5nqDSxl8nn5BSNxyR3n4I6eDmbolI6WT+QqR547RwxQapgjQBmtktdP+HTBb/a/zLsbzERTONyUB5pefh5TtjQ==",
       "dev": true
     },
-    "node_modules/font-awesome": {
-      "version": "4.7.0",
-      "resolved": "https://registry.npmjs.org/font-awesome/-/font-awesome-4.7.0.tgz",
-      "integrity": "sha512-U6kGnykA/6bFmg1M/oT9EkFeIYv7JlX3bozwQJWiiLz6L0w3F5vBVPxHlwyX/vtNq1ckcpRKOB9f2Qal/VtFpg==",
-      "engines": {
-        "node": ">=0.10.3"
-      }
-    },
     "node_modules/for-each": {
       "version": "0.3.3",
       "resolved": "https://registry.npmjs.org/for-each/-/for-each-0.3.3.tgz",