Remove "Password reset instructions" hint on reset you password page?
You want to use hook form alter like this:

function mymodule_form_alter($form_id, &amp;$form) {

  if ($form_id == 'user_edit') {
    $form['fieldname'] = '';
  }
}


If you install devel and kint, then you kan kint($form), to see what the fieldname is.