add various fixes
diff --git a/openstack/db/v1/databases/requests.go b/openstack/db/v1/databases/requests.go
index 4a1b40c..f1eb5d9 100644
--- a/openstack/db/v1/databases/requests.go
+++ b/openstack/db/v1/databases/requests.go
@@ -108,8 +108,7 @@
 	var res DeleteResult
 
 	_, res.Err = client.Request("DELETE", dbURL(client, instanceID, dbName), gophercloud.RequestOpts{
-		JSONBody: &res.Body,
-		OkCodes:  []int{202},
+		OkCodes: []int{202},
 	})
 
 	return res