Insert it in hook_form_alter implementation in your custom module

global $user;    
if($form_id     == "user_admin_account" && $user->uid != 1) {
     $keys =     array('name', 'status', 'roles', 'member_for', 'last_access',     'operations');
     foreach($keys as $key) {
     unset($form[$key][1]);
    }
    unset($form['accounts']['#options'][1]);
     }