class RuboCop::Cop::Chef::Modernize::IncludingMixinShelloutInResources

There is no need to include Chef::Mixin::ShellOut or Chef::Mixin::PowershellOut in resources or providers as this is already done by Chef Infra Client 12.4+.

@example

### incorrect
require 'chef/mixin/shell_out'
include Chef::Mixin::ShellOut
require 'chef/mixin/powershell_out'
include Chef::Mixin::PowershellOut