Refactor OpenStack services to use default OkCodes
diff --git a/openstack/compute/v2/extensions/keypairs/requests.go b/openstack/compute/v2/extensions/keypairs/requests.go
index 287e412..1ab7274 100644
--- a/openstack/compute/v2/extensions/keypairs/requests.go
+++ b/openstack/compute/v2/extensions/keypairs/requests.go
@@ -94,7 +94,6 @@
 	var res GetResult
 	_, res.Err = client.Request("GET", getURL(client, name), gophercloud.RequestOpts{
 		JSONResponse: &res.Body,
-		OkCodes:      []int{200},
 	})
 	return res
 }
@@ -102,8 +101,6 @@
 // Delete requests the deletion of a previous stored KeyPair from the server.
 func Delete(client *gophercloud.ServiceClient, name string) DeleteResult {
 	var res DeleteResult
-	_, res.Err = client.Request("DELETE", deleteURL(client, name), gophercloud.RequestOpts{
-		OkCodes: []int{202},
-	})
+	_, res.Err = client.Request("DELETE", deleteURL(client, name), gophercloud.RequestOpts{})
 	return res
 }