Remove unneeded users API view

The help-users API view is sufficient

gnuviechadmin/help/serializers.py

@@ -2,22 +2,14 @@
 Serializers for the REST API
 """
 
-from django.contrib.auth import get_user_model
 from rest_framework import serializers
 
 from help.models import HelpUser
 
-User = get_user_model()
-
-
-class UserSerializer(serializers.HyperlinkedModelSerializer):
-    class Meta:
-        model = User
-        fields = ["url", "username", "helpuser"]
-        read_only_fields = ["username", "helpuser"]
-
 
 class HelpUserSerializer(serializers.HyperlinkedModelSerializer):
+    user = serializers.StringRelatedField()
+
     class Meta:
         model = HelpUser
         fields = [