minor fix in password strength plugin

cmsWebApp/webroot/scripts/password_strength_lightweight.js

@@ -50,7 +50,6 @@ Dependencies:
             <li data-criterion="capital" class="invalid">At least <strong>one capital letter</strong></li> \
             <li data-criterion="lower" class="invalid">At least <strong>one lower case letter</strong></li> \
             <li data-criterion="number" class="invalid">At least <strong>one number</strong></li> \
-            <li data-criterion="letter" class="invalid">No <strong>spaces</strong> and <strong>special characters</strong></li> \
             </ul> \
             </div></div>');