The page navigation with the database can be hidden in 3 ways:
1. The user hides the side navigation for himself in his start menu on the right side.
2. The page navigation is hidden at the report level for all report users. This can be done in the report settings at the bottom under "Options".
3. The site navigation can be hidden for specific users via an access profile. The setting can be made in Access Profile > Configure Navigation.
Here you will find more information on the subject of Access profiles.