fix: 修复UploadKey失败问题

src/components/FormFields/UploadKey.vue

@@ -26,10 +26,6 @@ export default {
       if (e.target.files.length === 0) {
         return
       }
-      const file_name = e.target.files[0].name
-      if (file_name.substr(-5) !== '.json') {
-        return
-      }
       const vm = this
       const reader = new FileReader()
       reader.onload = function() {