Unused Pages
You may find some pages included in your new site from the template unneeded or unwanted, You can place unneeded pages into Draft status to prevent them from being accessible by viewers by editing the page then changing Status to Draft.
If the page is included in one of the Menus (left top tabs, right top tabs, or Primary (left side) menu, you will need also need to remove the link from the menu. From the dashboard, hover on Appearance, then click on Menus. Select the appropriate menu to edit, then click on the down triangle next to the menu listing to expose menu options for that link and click on the red Remove link