Remove deprecated Domain::managed()

app/Models/Domain.php

@@ -123,20 +123,18 @@ class Domain extends Model
 		});
 	}
 
-	public function isManaged(): bool
-	{
-		return our_address()->pluck('zone.domain')->pluck('id')->contains($this->id);
-	}
-
 	/**
 	 * Determine if this zone is managed by this host
 	 *
 	 * @return bool
-	 * @deprecated use self::isManaged();
+	 * @throws \Exception
 	 */
-	public function managed(): bool
+	public function isManaged(): bool
 	{
-		return our_address($this)->count() > 0;
+		return ($x=our_address())
+			&& $x->pluck('zone.domain')
+				->pluck('id')
+				->contains($this->id);
 	}
 
 	/**