The Codex is a good read and includes this:
http://codex.wordpress.org/Page_Templates
It is easier te help you if you give us more information: what is the link to your website and/or which theme are you using?
locate your theme folder and open the index.php file.
Look for this line and remove it:
<?php the_post_thumbnail(single-post-image); ?>
I ended up making a post template named: template-news-posts.php
Then using this code:
<?php
/*
Template Name: Blog list - News
*/
?>
<?php get_header(); ?>
<div class="contents-wrap float-left two-column">
<?php
if ( get_query_var('paged') ) {
$paged = get_query_var('paged');
} elseif ( get_query_var('page') ) {
$paged = get_query_var('page');
} else {
$paged = 1;
}
$args = array(
'paged='.$paged,
'showposts' => '',
'posts_per_page' => '',
'tax_query' => array(
array(
'taxonomy' => 'post_format',
'field' => 'slug',
'terms' => array('post-format-news')
)
)
);
query_posts( $args );
?>
<div class="entry-content-wrapper">
<h1 class="entry-title"><?php the_title(); ?></h1>
<?php get_template_part( 'loop', 'blog' ); ?>
</div>
</div>
<?php get_sidebar(); ?>
<?php get_footer(); ?>
I created the template to be selected in the post form. I then added a file in my includes/postfomats called news.php
<div class="entry-post-wrapper">
<?php
get_template_part( 'includes/postformats/post-contents' );
get_template_part( 'includes/postformats/post-data' );
?>
</div>
With that I never called for the featured image and so it’s not displayed on page. Only the contents and data for the page, fitting into the page format already.
Thanks for the codex comment, it walked me through removal for post specific templates.