Squash a warning

deps/rabbitmq_cli/lib/clear_permissions_command.ex

@@ -24,13 +24,14 @@ defmodule ClearPermissionsCommand do
   def validate([], _) do
     {:validation_failure, :not_enough_args}
   end
-  def switches(), do: []
 
   def validate([_|_] = args, _) when length(args) > 1 do
     {:validation_failure, :too_many_args}
   end
   def validate([_], _), do: :ok
 
+  def switches(), do: []
+
   def run([username], %{node: node_name, vhost: vhost}) do
     node_name
     |> Helpers.parse_node