Merge ~blake-rouse/maas:fix-1794634 into maas:master

[Blake Rouse]

Fix LP: #1794634 - Remove the unique_together on the model that was removed in the migration.

This was caused by a bad merge. I had issues with the last branch that landed and had to rebase the branch on top of a new master. I believe that is how this code got back in, as it could not have been present for me to generate the migration.

[Blake Rouse (blake-rouse)]

Self-approving, as this was a bad merge from the last branch. A migration already exists to remove this unique_together.

review: Approve

diff --git a/src/maasserver/models/bmc.py b/src/maasserver/models/bmc.py
index 2b80690..00bad58 100644
--- a/src/maasserver/models/bmc.py
+++ b/src/maasserver/models/bmc.py
@@ -142,9 +142,6 @@ class BMC(CleanSave, TimestampedModel):
     :ivar objects: The :class:`BMCManager`.
     """
 
-    class Meta(DefaultMeta):
-        unique_together = ("power_type", "power_parameters", "ip_address")
-
     objects = Manager()
 
     bmcs = BMCManager()
@@ -527,12 +524,6 @@ class Pod(BMC):
                 return interface.node
         return None
 
-    def unique_error_message(self, model_class, unique_check):
-        if unique_check == ('power_type', 'power_parameters', 'ip_address'):
-            raise ValidationError(
-                'Pod with type and parameters already exists.')
-        return super(Pod, self).unique_error_message(model_class, unique_check)
-
     def sync_hints(self, discovered_hints):
         """Sync the hints with `discovered_hints`."""
         try: