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.
In Course Navigation, click the Pages link.
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 Options icon  and select the Delete link .
Click the Delete button.