diff --git a/src/wp-includes/bookmark-template.php b/src/wp-includes/bookmark-template.php
index af48fbfdca..893494a7e9 100644
--- a/src/wp-includes/bookmark-template.php
+++ b/src/wp-includes/bookmark-template.php
@@ -105,14 +105,6 @@ function _walk_bookmarks( $bookmarks, $args = '' ) {
 
 		$target = $bookmark->link_target;
 		if ( '' !== $target ) {
-			if ( is_string( $rel ) && '' !== $rel ) {
-				if ( ! str_contains( $rel, 'noopener' ) ) {
-					$rel = trim( $rel ) . ' noopener';
-				}
-			} else {
-				$rel = 'noopener';
-			}
-
 			$target = ' target="' . $target . '"';
 		}
 
diff --git a/tests/phpunit/tests/bookmark/wpListBookmarks.php b/tests/phpunit/tests/bookmark/wpListBookmarks.php
deleted file mode 100644
index ba0121fd00..0000000000
--- a/tests/phpunit/tests/bookmark/wpListBookmarks.php
+++ /dev/null
@@ -1,108 +0,0 @@
-<?php
-
-/**
- * Test wp_list_bookmarks().
- *
- * @group bookmark
- * @covers ::wp_list_bookmarks
- */
-class Tests_Functions_wpListBookmarks extends WP_UnitTestCase {
-
-	/**
-	 * Test that wp_list_bookmarks adds "noopener" to the "rel" attribute.
-	 *
-	 * @dataProvider data_wp_list_bookmarks_adds_noopener
-	 *
-	 * @ticket 53839
-	 *
-	 * @param array $args      The arguments to create the bookmark.
-	 * @param string $expected Expected string to test.
-	 */
-	public function test_wp_list_bookmarks_adds_noopener( $args, $expected ) {
-		self::factory()->bookmark->create( $args );
-		$this->assertStringContainsString( $expected, wp_list_bookmarks( 'echo=0' ) );
-	}
-
-	/**
-	 * Data provider.
-	 *
-	 * @return array
-	 */
-	public function data_wp_list_bookmarks_adds_noopener() {
-		return array(
-			'target as "_blank"'                         => array(
-				'args'     => array(
-					'link_name'   => 'With _blank',
-					'link_url'    => 'https://www.wordpress.org',
-					'link_target' => '_blank',
-				),
-				'expected' => 'rel="noopener"',
-			),
-			'target as "_blank" and a link relationship' => array(
-				'args'     => array(
-					'link_name'   => 'With _blank and a link relationship',
-					'link_url'    => 'https://www.wordpress.org',
-					'link_target' => '_blank',
-					'link_rel'    => 'me',
-				),
-				'expected' => 'rel="me noopener"',
-			),
-			'target as "_top"'                           => array(
-				'args'     => array(
-					'link_name'   => 'With _top',
-					'link_url'    => 'https://www.wordpress.org',
-					'link_target' => '_top',
-				),
-				'expected' => 'rel="noopener"',
-			),
-			'target as "_top" and a link relationship'   => array(
-				'args'     => array(
-					'link_name'   => 'With _top and a link relationship',
-					'link_url'    => 'https://www.wordpress.org',
-					'link_target' => '_top',
-					'link_rel'    => 'me',
-				),
-				'expected' => 'rel="me noopener"',
-			),
-		);
-	}
-
-	/**
-	 * Test that wp_list_bookmarks does not add "noopener" to the "rel" attribute.
-	 *
-	 * @dataProvider data_wp_list_bookmarks_does_not_add_noopener
-	 *
-	 * @ticket 53839
-	 *
-	 * @param array $args The arguments to create the bookmark.
-	 */
-	public function test_wp_list_bookmarks_does_not_add_noopener( $args ) {
-		self::factory()->bookmark->create( $args );
-		$this->assertStringNotContainsString( 'noopener', wp_list_bookmarks( 'echo=0' ) );
-	}
-
-	/**
-	 * Data provider.
-	 *
-	 * @return array
-	 */
-	public function data_wp_list_bookmarks_does_not_add_noopener() {
-		return array(
-			'target as "_none"'                         => array(
-				'args' => array(
-					'link_name'   => 'With _blank',
-					'link_url'    => 'https://www.wordpress.org',
-					'link_target' => '_none',
-				),
-			),
-			'target as "_none" and a link relationship' => array(
-				'args' => array(
-					'link_name'   => 'With _blank and a link relationship',
-					'link_url'    => 'https://www.wordpress.org',
-					'link_target' => '_none',
-					'link_rel'    => 'me',
-				),
-			),
-		);
-	}
-}