Remove unused Organization and User serializers; update POSDeviceViewSet to directly construct organization data for response

apps/pos_device/pos/api/v1/serializers/device.py

@@ -5,4 +5,4 @@ from rest_framework import serializers
 class DeviceSerializer(serializers.ModelSerializer):
     class Meta:
         model = pos_models.Device
-        fields = '__all__'
+        fields = '__all__'

apps/pos_device/pos/api/v1/serializers/organization.py

@@ -1,8 +0,0 @@
-from apps.pos_device import models as pos_models
-from rest_framework import serializers
-
-
-class OrganizationSerializer(serializers.ModelSerializer):
-    class Meta:
-        model = pos_models.Organization
-        fields = ['id', 'name', 'en_name'] 

apps/pos_device/pos/api/v1/serializers/user.py

@@ -1,8 +0,0 @@
-from django.contrib.auth.models import User as pos_models
-from rest_framework import serializers
-
-
-class UserSerializer(serializers.ModelSerializer):
-    class Meta:
-        model = pos_models.User
-        fields = ['id', 'username', 'first_name', 'last_name', 'email', 'mobile', 'phone', 'national_code']