Revert "Implemented chosen tags by adding priority field: chosen tags should have non-null priority field, other tags should have null priority field."

This reverts commit f7facf826d.

apps/tag/migrations/0003_tag_priority.py

@@ -1,18 +0,0 @@
-# Generated by Django 2.2.4 on 2019-10-18 15:25
-
-from django.db import migrations, models
-
-
-class Migration(migrations.Migration):
-
-    dependencies = [
-        ('tag', '0002_auto_20191009_1408'),
-    ]
-
-    operations = [
-        migrations.AddField(
-            model_name='tag',
-            name='priority',
-            field=models.IntegerField(default=None, null=True, unique=True),
-        ),
-    ]

apps/tag/models.py

@@ -14,8 +14,6 @@ class Tag(TranslatedFieldsMixin, models.Model):
     category = models.ForeignKey('TagCategory', on_delete=models.CASCADE,
                                  null=True, related_name='tags',
                                  verbose_name=_('Category'))
-    # chosen tags should have non-null priority,other tags priority should be null
-    priority = models.IntegerField(unique=True, null=True, default=None)
 
     class Meta:
         """Meta class."""