featured contend / disable pictures

@Daniel: Sorry, when you choose Featured Content, it automatically get featured image of that page.

So, either you can hide that image by adding in the following css in “Appearance => Customize => Theme Options => Custom CSS Options” box
#featured-content .featured-homepage-image { display: none; }

or you need to build child theme and then copy function catchresponsive_page_content() to your child theme functions.php file and then remove the following code

if ( has_post_thumbnail() ) {
	$catchresponsive_page_content .= '
	<figure class="featured-homepage-image">
		<a href="' . get_permalink() . '" title="'.the_title( '', '', false ).'">
		'. get_the_post_thumbnail( $post->ID, 'catchresponsive-featured-content', array( 'title' => esc_attr( $title_attribute ), 'alt' => esc_attr( $title_attribute ), 'class' => 'pngfix' ) ) .'
		</a>
	</figure>';
}
else {
	$catchresponsive_first_image = catchresponsive_get_first_image( $post->ID, 'catchresponsive-featured-content', array( 'title' => esc_attr( $title_attribute ), 'alt' => esc_attr( $title_attribute ), 'class' => 'pngfix' ) );

	if ( '' != $catchresponsive_first_image ) {
		$catchresponsive_page_content .= '
		<figure class="featured-homepage-image">
			<a href="' . get_permalink() . '" title="'.the_title( '', '', false ).'">
				'. $catchresponsive_first_image .'
			</a>
		</figure>';
	}
}