Change HTTP methods for OpenStack CDN
diff --git a/openstack/cdn/v1/flavors/requests.go b/openstack/cdn/v1/flavors/requests.go
index e029749..8755a95 100644
--- a/openstack/cdn/v1/flavors/requests.go
+++ b/openstack/cdn/v1/flavors/requests.go
@@ -17,8 +17,6 @@
 // Get retrieves a specific flavor based on its unique ID.
 func Get(c *gophercloud.ServiceClient, id string) GetResult {
 	var res GetResult
-	_, res.Err = c.Request("GET", getURL(c, id), gophercloud.RequestOpts{
-		JSONResponse: &res.Body,
-	})
+	_, res.Err = c.Get(getURL(c, id), &res.Body, nil)
 	return res
 }