Ticket #31828: 31828.patch

wp-admin/css/dashboard.css

@@ -1103 +1103 @@
                 padding: 5px;
         }
 
+        /* Hide "Dismiss" Text */
+        .welcome-panel .welcome-panel-close {
+                font-size: 0;
+        }
+
         /* Make the close icon larger for tappability. */
         #welcome-panel.welcome-panel .welcome-panel-close:before {
                 font-size: 20px;