Customize: Hide expansion arrows in Customizer's available widgets list.

Fixes regression introduced by [42794].

Props dlh.
See #40677.
Fixes #43983.

Built from https://develop.svn.wordpress.org/trunk@43244


git-svn-id: http://core.svn.wordpress.org/trunk@43073 1a063a9b-81f0-0310-95a4-ce76da25c4cd

wp-admin/css/customize-widgets-rtl.css

@@ -235,6 +235,11 @@
 	width: auto !important;
 }
 
+/* Keep rule that is no longer necessary on widgets.php. */
+#available-widgets .widget-action {
+	display: none;
+}
+
 .ios #available-widgets {
 	transition: right 0s;
 }

wp-admin/css/customize-widgets.css

@@ -235,6 +235,11 @@
 	width: auto !important;
 }
 
+/* Keep rule that is no longer necessary on widgets.php. */
+#available-widgets .widget-action {
+	display: none;
+}
+
 .ios #available-widgets {
 	transition: left 0s;
 }

wp-includes/version.php

@@ -4,7 +4,7 @@
  *
  * @global string $wp_version
  */
-$wp_version = '5.0-alpha-43243';
+$wp_version = '5.0-alpha-43244';
 
 /**
  * Holds the WordPress DB revision, increments when changes are made to the WordPress DB schema.