Jak usunąć po angielsku z logowania

wersja skryptu MyBB: 1.8.3
adres forum: www.OnlyFrags.pl/forum
na czym polega problem (screen, opis, komunikaty, nazwa stylu/theme/szablonu): Jak usunąć to bezpiecznie, żeby się nie zepsuło to po angielsku ?
http://screenshooter.net/100475781/ctbbmkt

header_welcomeblock_guest

{$lang->welcome_guest} <span class="loginbutton"><a href="{$mybb->settings['bburl']}/member.php?action=login" onclick="$('#quick_login').modal({ fadeDuration: 250, keepelement: true }); return false;"><i style="font-size: 14px;" class="fa fa-sign-in fa-fw"></i> {$lang->welcome_login}</a></span> <span class="registerbutton"><a href="{$mybb->settings['bburl']}/member.php?action=register"><i style="font-size: 14px;" class="fa fa-user fa-fw"></i> {$lang->welcome_register}</a></span>

<div class="modal" id="quick_login" style="display: none;">
    <form method="post" action="{$mybb->settings['bburl']}/member.php">
        <input name="action" type="hidden" value="do_login" />
        <input name="url" type="hidden" value="" />
        <input name="quick_login" type="hidden" value="1" />
          <div class="welcometitle">
              <h1>Login at {$mybb->settings['homename']}</h1>
          </div>
        <div class="welcomebox">
              Square is a minimalistic template, renewed to 1.8 MyBB series. You can find a lot of details in the design, and of course, all squared.<br /><br />
              Enjoy the crossbrowser design, tested in the latest Google Chrome, Mozilla Firefox and Opera versions.<br /><br />
              ¡¿What are you waiting for?! Join us now!
          </div>
          <div class="welcomelogin">
              <ul>
                <li><span class="log"><i class="fa fa-user fa-fw"></i></span><input name="quick_username" id="quick_login_username" type="text" value="Username" class="textlog" size="25" /></li>
                <li><span class="log"><i class="fa fa-lock fa-fw"></i></span><input name="quick_password" id="quick_login_password" type="password" value="Password" class="textlog" size="25" /></li>
            </ul>
              <br style="clear: both;"/>
              <input name="quick_remember" id="quick_login_remember" type="checkbox" value="yes" class="checkbox" checked="checked" />
            <label for="quick_login_remember" style="color: #363636;">{$lang->remember_me}</label><br />
              <a href="{$mybb->settings['bburl']}/member.php?action=lostpw" class="lost_password">{$lang->lost_password}</a>
            <br style="clear: both;"/><br />
              <input class="loginbutton" name="submit" type="submit" value="{$lang->login}" style="cursor: pointer;" />
            <span class="registerbutton"><a href="{$mybb->settings['bburl']}/member.php?action=register"><i style="font-size: 14px;" class="fa fa-user fa-fw"></i> Register</a></span>
          </div>
    </form>
</div>

<script type="text/javascript">
    $("#quick_login input[name='url']").val($(location).attr('href'));
</script>

Ten fragment:

<div class="welcomebox">
              Square is a minimalistic template, renewed to 1.8 MyBB series. You can find a lot of details in the design, and of course, all squared.<br /><br />
              Enjoy the crossbrowser design, tested in the latest Google Chrome, Mozilla Firefox and Opera versions.<br /><br />
              ¡¿What are you waiting for?! Join us now!
          </div>