(maint) remove obsolete test setup

This was a workaround for a puppet bug long fixed.

Author: DavidS

spec/acceptance/device_spec.rb

@@ -11,10 +11,6 @@
     'ensure_param=present variant_pattern_param=0xAE321EEF url_param="https://www.google.com"'
   end
 
-  before(:all) do
-    FileUtils.mkdir_p(File.expand_path('~/.puppetlabs/opt/puppet/cache/devices/the_node/state'))
-  end
-
   describe 'using `puppet resource`' do
     it 'manages resources on the target system' do
       stdout_str, status = Open3.capture2e("puppet resource #{common_args} device_provider foo ensure=present #{default_type_values}")