You can delete a page if you no longer need it in your course.
Note: You will be unable to delete a page if it is used as the Front Page for your course.
Pages is designed to open to the front page for the course, if there is a front page selected. To select a page from the Pages Index, click the View All Pages button.
Locate the name of the page you want to delete. Click the Settings icon  and select the Delete link .