A family of Microsoft word processing software products for creating web, email, and print documents.
I had the same problem, but I have found a solution. To print track changes without printing the markup area, go to the review tab in the ribbon of Word 2013 and under the "Show Markup" dropdown uncheck "Comments" and "Formatting". This will remove the markup area when printing, but still show the rev bars in the right or left margin (however you set it).
The reason this happens is because when marking up a document comments and format changes show up in the markup pane on the right side of the document. Even if you are trying to print a page without format changes or comments it will still appear if you have a format change or a comment anywhere in the document.
If you change the "simple markup" to "original" it will not show any track changes as this was the intended function (to show the original document before changes).