Delete the Title in posts (post-title entry-title)

Hello,

i want to remove the whole post-tilte entry title from blog posts. (Note: Not just the Link)

The following custom css is not what i need:
This code does not remove the h1 tag from the code….

.post-title.entry-title {
display: none! important;
}

For the pages it works for me….therefore i enabled “display only breadcrumbs” in the child theme settings and i added some code in the function.php.
can you help me out?

Thanks!!

My current custom css:

.big-preview.single-big {
display: none;
}

div .wp-caption {
border: none;
}

My Current function.php in child theme:

<?php

/*
* Add your own functions here. You can also copy some of the theme functions into this file.
* WordPress will use those functions instead of the original functions then.
*/

add_filter(‘comments_open’,’__return_false’, 10, 2);

add_theme_support(‘avia_template_builder_custom_css’);

function add_custom_script(){
?>
<script>
jQuery(window).load(function(){
jQuery(“.rel-nofollow a”).attr(“rel”, “nofollow”);
});
</script>
<?php
}
add_action(‘wp_footer’, ‘add_custom_script’);

add_filter(‘avf_title_args’, ‘avia_remove_h1_hidden_title’, 10, 2);
function avia_remove_h1_hidden_title($args,$id)
{
$header_settings = avia_header_setting();
if($header_settings[‘header_title_bar’] == ‘breadcrumbs_only’)
{
$args[‘html’] = “<div class='{class} title_container’><div class=’container’>{additions}</div></div>”;
}

return $args;
}