Reduce user serializers information

app/api/serializers.py

@@ -17,7 +17,7 @@ class UserSerializer(serializers.ModelSerializer):
 
     class Meta:
         model = get_user_model()
-        fields = ('id', 'username', 'first_name', 'last_name', 'email', 'is_superuser')
+        fields = ('id', 'username', 'is_superuser')
 
 
 class LabelSerializer(serializers.ModelSerializer):