Revert "gm-fetch für Firefox gefixt"

This reverts commit 20e011bb55.

config/metadata.cjs

@@ -14,6 +14,8 @@ module.exports = {
   ],
   require: [
     'https://cdn.jsdelivr.net/gh/CoeJoder/waitForKeyElements.js@v1.2/waitForKeyElements.js',
+    `https://cdn.jsdelivr.net/npm/axios@${pkg.dependencies.axios}/dist/axios.min.js`,
+    `https://cdn.jsdelivr.net/npm/axios-userscript-adapter@${pkg.dependencies['axios-userscript-adapter']}/dist/axiosGmxhrAdapter.min.js`
   ],
   grant: [
     'GM.xmlHttpRequest',