You should edit template /skin1/customer/main/register.tpl
Remove lines 206-211
HTML Code:
{if $newbie eq "Y"}
{$lng.txt_newbie_registration_bottom}
<br /><a href="help.php?section=conditions" target="_blank"><font class="Text" style="white-space: nowrap;"><b>{$lng.lbl_terms_n_conditions}</b> </font>{include file="buttons/go.tpl"}</a>
{else}
{$lng.txt_user_registration_bottom}
{/if}
And /skin1/main/register_shipping_address.tpl lines 22-28
HTML Code:
<table cellpadding="0" cellspacing="0">
<tr>
<td><label for="ship2diff" class="RegSectionTitle">{$lng.lbl_ship_to_different_address}</label></td>
<td> </td>
<td><input type="checkbox" id="ship2diff" name="ship2diff" value="Y" onclick="javascript: ship2diffOpen();"{if $ship2diff} checked="checked"{/if} /></td>
</tr>
</table>