But you don't must delete thinks...
You can insert, that this link should
only visible to admin e.g.
<!-- BEGIN mg_switch_user_is_admin -->
<tr>
<td align="left" width="8">{IMG_ARROW_RIGHT}</td>
<td class="genmed" align="left">{ADMIN_LINK}</a></td>
</tr>
<!-- END mg_switch_user_is_admin -->
or
only visible to users
<!-- BEGIN switch_user_logged_in -->
<tr>
<td align="left" width="8">{IMG_ARROW_RIGHT}</td>
<td class="genmed" align="left"><a href="{U_BOOKMARKS}">{L_BOOKMARKS}</a></td>
</tr>
<!-- END switch_user_logged_in -->
You also should set permission to this links in
ACP to admin or registered users