Remove text/css type from Core LINK tags

Author: sirreal

src/wp-admin/includes/ajax-actions.php

@@ -3946,7 +3946,7 @@ function wp_ajax_parse_media_shortcode() {
 	$styles = wpview_media_sandbox_styles();
 
 	foreach ( $styles as $style ) {
-		$head .= '<link type="text/css" rel="stylesheet" href="' . $style . '">';
+		$head .= '<link rel="stylesheet" href="' . $style . '">';
 	}
 
 	if ( ! empty( $wp_scripts ) ) {

src/wp-includes/general-template.php

@@ -5061,7 +5061,7 @@ function wp_admin_css( $file = 'wp-admin', $force_echo = false ) {
 	}
 
 	$stylesheet_link = sprintf(
-		"<link rel='stylesheet' href='%s' type='text/css' />\n",
+		"<link rel='stylesheet' href='%s' />\n",
 		esc_url( wp_admin_css_uri( $file ) )
 	);
 
@@ -5080,7 +5080,7 @@ function wp_admin_css( $file = 'wp-admin', $force_echo = false ) {
 
 	if ( function_exists( 'is_rtl' ) && is_rtl() ) {
 		$rtl_stylesheet_link = sprintf(
-			"<link rel='stylesheet' href='%s' type='text/css' />\n",
+			"<link rel='stylesheet' href='%s' />\n",
 			esc_url( wp_admin_css_uri( "$file-rtl" ) )
 		);