Remove last references to audit logs

app/Models/Backup.php

@@ -99,14 +99,4 @@ class Backup extends Model
     {
         return $this->belongsTo(Server::class);
     }
-
-    /**
-     * @return \Illuminate\Database\Eloquent\Relations\HasMany
-     */
-    public function audits()
-    {
-        return $this->hasMany(AuditLog::class, 'metadata->backup_uuid', 'uuid')
-            ->where('action', 'LIKE', 'server:backup.%');
-        // ->where('metadata->backup_uuid', $this->uuid);
-    }
 }