Imagem em destaque Duplicada no post

Minhas imagens em destaque do post tambem ficam duplicadas no tipo do artigo, não quero que ela fiquem no artigo também, como posso resolver isso?
Meu Functions.php está assim:

<?php

/**
 * News Portal functions and definitions
 *
 * @link https://developer.wordpress.org/themes/basics/theme-functions/
 *
 * @package Mystery Themes
 * @subpackage News Portal
 * @since 1.0.0
 */

if ( ! function_exists( 'news_portal_setup' ) ) :
/**
 * Sets up theme defaults and registers support for various WordPress features.
 *
 * Note that this function is hooked into the after_setup_theme hook, which
 * runs before the init hook. The init hook is too late for some features, such
 * as indicating support for post thumbnails.
 */
function news_portal_setup() {
	/*
	 * Make theme available for translation.
	 * Translations can be filed in the /languages/ directory.
	 * If you're building a theme based on News Portal, use a find and replace
	 * to change 'news-portal' to the name of your theme in all the template files.
	 */
	load_theme_textdomain( 'news-portal', get_template_directory() . '/languages' );

	// Add default posts and comments RSS feed links to head.
	add_theme_support( 'automatic-feed-links' );

	/*
	 * Let WordPress manage the document title.
	 * By adding theme support, we declare that this theme does not use a
	 * hard-coded <title> tag in the document head, and expect WordPress to
	 * provide it for us.
	 */
	add_theme_support( 'title-tag' );

	/*
	 * Enable support for Post Thumbnails on posts and pages.
	 *
	 * @link https://developer.wordpress.org/themes/functionality/featured-images-post-thumbnails/
	 */
	add_theme_support( 'post-thumbnails' );

	add_image_size( 'news-portal-block-medium', 305, 207, true );
	add_image_size( 'news-portal-block-thumb', 136, 102, true );
	add_image_size( 'news-portal-slider-medium', 622, 420, true );
	add_image_size( 'news-portal-carousel-portrait', 400, 600, true );
	add_image_size( 'news-portal-alternate-grid', 340, 316, true );

	// This theme uses wp_nav_menu() in one location.
	register_nav_menus( array(
		'news_portal_top_menu' 		=> esc_html__( 'Top Menu', 'news-portal' ),
		'news_portal_primary_menu' 	=> esc_html__( 'Primary Menu', 'news-portal' ),
		'news_portal_footer_menu' 	=> esc_html__( 'Footer Menu', 'news-portal' )
	) );

	/*
	 * Switch default core markup for search form, comment form, and comments
	 * to output valid HTML5.
	 */
	add_theme_support( 'html5', array(
		'search-form',
		'comment-form',
		'comment-list',
		'gallery',
		'caption',
	) );

	// Add theme support for Custom Logo.
	add_theme_support( 'custom-logo', array(
		'width'       => 300,
		'height'      => 45,
		'flex-width'  => true,
	) );

	// Set up the WordPress core custom background feature.
	add_theme_support( 'custom-background', apply_filters( 'news_portal_custom_background_args', array(
		'default-color' => 'ffffff',
		'default-image' => '',
	) ) );

	// Add theme support for selective refresh for widgets.
	add_theme_support( 'customize-selective-refresh-widgets' );

	// WooCommerce Support
	if ( class_exists( 'WooCommerce' ) ) {
		add_theme_support( 'woocommerce' );
	}

}
endif;
add_action( 'after_setup_theme', 'news_portal_setup' );

/*-----------------------------------------------------------------------------------------------------------------------*/
/**
 * Set the content width in pixels, based on the theme's design and stylesheet.
 *
 * Priority 0 to make it available to lower priority callbacks.
 *
 * @global int $content_width
 */
function news_portal_content_width() {
	$GLOBALS['content_width'] = apply_filters( 'news_portal_content_width', 640 );
}
add_action( 'after_setup_theme', 'news_portal_content_width', 0 );

/*-----------------------------------------------------------------------------------------------------------------------*/
/**
 * Set the theme version
 *
 * @global int $news_portal_version
 * @since 1.0.0
 */
function news_portal_theme_version() {
	$news_portal_theme_info = wp_get_theme();
	$GLOBALS['news_portal_version'] = $news_portal_theme_info->get( 'Version' );
}
add_action( 'after_setup_theme', 'news_portal_theme_version', 0 );

/*-----------------------------------------------------------------------------------------------------------------------*/
/**
 * Add a pingback url auto-discovery header for singularly identifiable articles.
 */
function news_portal_pingback_header() {
	if ( is_singular() && pings_open() ) {
		echo '<link rel="pingback" href="', esc_url( get_bloginfo( 'pingback_url' ) ), '">';
	}
}
add_action( 'wp_head', 'news_portal_pingback_header' );

/*-----------------------------------------------------------------------------------------------------------------------*/
/**
 * Custom template tags for this theme.
 */
require get_template_directory() . '/inc/template-tags.php';

/**
 * Additional features to allow styling of the templates.
 */
require get_template_directory() . '/inc/template-functions.php';

/**
 * Customizer additions.
 */
require get_template_directory() . '/inc/customizer/customizer.php';

/**
 * Load Jetpack compatibility file.
 */
require get_template_directory() . '/inc/jetpack.php';

/**
 * Load Widget function file
 */
require get_template_directory() . '/inc/widgets/np-widget-functions.php';

/**
 * Custom files for hook
 */
require get_template_directory() . '/inc/hooks/np-header-hooks.php';
require get_template_directory() . '/inc/hooks/np-widget-hooks.php';
require get_template_directory() . '/inc/hooks/np-custom-hooks.php';
require get_template_directory() . '/inc/hooks/np-footer-hooks.php';

/**
 * Custom files for post metabox
 */

require get_template_directory() . '/inc/metaboxes/np-post-metabox.php';
require get_template_directory() . '/inc/metaboxes/np-page-metabox.php';

/**
 * Load theme about page
 */
require get_template_directory(). '/inc/about-theme/news-portal-about.php';

/**
 * Load TGM
 */
require get_template_directory() . '/inc/tgm/np-recommended-plugins.php';