(MODULES-4854) remove allow_deprecations

This module has been released to drop puppet 3 so we will no longer allow deprecated functions via unit testing.

Author: eputnam

.sync.yml

@@ -3,5 +3,3 @@ NOTICE:
   unmanaged: true
 appveyor.yml:
   delete: true
-spec/spec_helper.rb:
-  allow_deprecations: true