title: Remove publishing restrictions on all the Sitecore nodes
body: <p>I want to create a Sitecore powershell script which goes through the content trees and removes any present publishing restrictions </p>
  
  <p>Everywhere I have seen, there are examples of how to publish an item. 
  I don't want to publish the item. I want to remove the publishing restrictions recursively in Sitecore powershell. 
  If there is any restriction on Publishing target, or any date restriction already imposed, or if any item is made not to publish by removing the tick mark, I want to reset it all.</p>