Remove embed validators for deleted messages

These caused more harm than they were worth, as every time Discord updated a behaviour of an embed we would get errors and need ot update the validation. Instead we should just accept whatever discord gives us as correct

Author: ChrisLovering

pydis_site/apps/api/migrations/0083_remove_embed_validation.py

@@ -0,0 +1,19 @@
+# Generated by Django 3.1.14 on 2022-06-30 09:41
+
+import django.contrib.postgres.fields
+from django.db import migrations, models
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('api', '0082_otn_allow_big_solidus'),
+    ]
+
+    operations = [
+        migrations.AlterField(
+            model_name='deletedmessage',
+            name='embeds',
+            field=django.contrib.postgres.fields.ArrayField(base_field=models.JSONField(), blank=True, help_text='Embeds attached to this message.', size=None),
+        ),
+    ]

pydis_site/apps/api/models/bot/message.py

@@ -7,7 +7,6 @@
 
 from pydis_site.apps.api.models.bot.user import User
 from pydis_site.apps.api.models.mixins import ModelReprMixin
-from pydis_site.apps.api.models.utils import validate_embed
 
 
 class Message(ModelReprMixin, models.Model):
@@ -48,9 +47,7 @@ class Message(ModelReprMixin, models.Model):
         blank=True
     )
     embeds = pgfields.ArrayField(
-        models.JSONField(
-            validators=(validate_embed,)
-        ),
+        models.JSONField(),
         blank=True,
         help_text="Embeds attached to this message."
     )