Widgets: Revert [34465], as it introduced a regression, making the $index argument of dynamic_sidebar() case-sensitive.

Fixes #34995 for trunk. See #23423.

git-svn-id: https://develop.svn.wordpress.org/trunk@36130 602fd350-edb4-49c9-b593-d223f7449a82

tests/phpunit/tests/widgets.php

@@ -535,23 +535,6 @@ class Tests_Widgets extends WP_UnitTestCase {
 		$this->assertArrayNotHasKey( 2, $option_value );
 	}
 
-	/**
-	 * @ticket 23423
-	 */
-	function test_dynamic_sidebar_id_special_characters() {
-		wp_widgets_init();
-		register_sidebar( array(
-			'name' => 'Sidebar 2',
-			'id' => 'sidebar-2',
-		) );
-
-		ob_start();
-		$result = dynamic_sidebar( 'Sidebar 1' );
-		ob_end_clean();
-
-		$this->assertFalse( $result );
-	}
-
 	/**
 	 * @see wp_widget_control()
 	 */