Some templates offer an option to do this automatically, however some do not. To remove the comments function from pages in wordpress is simple. Do as follows.
Got to Settings >> Discussion >> “Allow people to post comments on new articles” and remove the tick.
Removing the comments section from wordpress pages
This is a little more work. You need to select
Appearance >> Editor
Then under your theme select the page template which is normally called Page.php.
Once done, normally under or near this line of code <?php the_content(__( you will see line of code like this.
<?php// comments_template( '', true ); ?>
Simply delete that line and then save the template. Make sure you keep a note of the code in case you ever want to add it back in. Job done