How to remove right column sidebar from product view page in Magento?

Edit your theme's "/layout/catalog.xml" file. Find the below lines.

  Catalog Product View (Any)
      
        
      

You can set your template to 1column like this:

or use "<remove name="right"/>" code to remove right sidebar.
Catalog Product View (Any)

  
  Catalog Product View (Any)
    
      
        
      

After making changes dont forget to refresh the cache. That's it. You are done.