fix: 🐛 头像更新问题

backend/dvadmin/system/views/file_list.py

@@ -1,9 +1,5 @@
 from rest_framework import serializers
-from rest_framework.decorators import action
-from rest_framework.parsers import FileUploadParser, FormParser, MultiPartParser
-
 from dvadmin.system.models import FileList
-from dvadmin.utils.json_response import SuccessResponse
 from dvadmin.utils.serializers import CustomModelSerializer
 from dvadmin.utils.viewset import CustomModelViewSet