When you add your first article in joomla 1.5 you could notice that tree icons are attached to article (Pdf, Print and E-Mail icon). To remove this icon from your article follow this few steps.

STEP 1.
In the Joomla 1.5 admin panel, go to Content – Article Manager

STEP 2.
Click on title of article that you want to edit

STEP 3.
In the right panel click on Parameters – Advanced

STEP 4.
Find PDF, Print i E-mail parameters option and set their values to Hide

STEP 5. Save settings