Remove Bookmarklet div

open up “wp-admin/post.php” and take out this code:
<div class="wrap">
<?php _e('<h3>WordPress bookmarklet</h3>
You can drag the following link to your links bar or add it to your bookmarks and when you "Press it" it will open up a popup window with information and a link to the site you&#8217re currently browsing so you can make a quick post about it. Try it out:') ?>

<?php
$bookmarklet_height= (get_settings('use_trackback')) ? 460 : 420;
if ($is_NS4 || $is_gecko) {
?>
= 0){Q=getSelection();}else{Q=document.selection?document.selection.createRange().text:document.getSelection();}void(window.open('<?php echo get_settings('siteurl') ?>/wp-admin/bookmarklet.php?text='+escape(Q)+'&popupurl='+escape(location.href)+'&popuptitle='+escape(document.title),'<?php _e('WordPress bookmarklet') ?>','scrollbars=yes,width=600,height=460,left=100,top=150,status=yes'));"><?php printf(__('Press It - %s'), get_settings('blogname')); ?>
<?php
} else if ($is_winIE) {
?>
/wp-admin/bookmarklet.php?text='+escape(Q)+'<?php echo $bookmarklet_tbpb ?>&popupurl='+escape(location.href)+'&popuptitle='+escape(document.title),'bookmarklet','scrollbars=yes,width=600,height=<?php echo $bookmarklet_height ?>,left=100,top=150,status=yes'));btw.focus();"><?php printf(__('Press it - %s'), get_settings('blogname')); ?>
<script type="text/javascript" language="JavaScript">
<!--
function oneclickbookmarklet(blah) {
window.open ("profile.php?action=IErightclick", "oneclickbookmarklet", "width=500, height=450, location=0, menubar=0, resizable=0, scrollbars=1, status=1, titlebar=0, toolbar=0, screenX=120, left=120, screenY=120, top=120");
}
// -->
</script>

One-click bookmarklet:

click here
<?php
} else if ($is_opera) {
?>
/wp-admin/bookmarklet.php?popupurl='+escape(location.href)+'&popuptitle='+escape(document.title)+'<?php echo $bookmarklet_tbpb ?>','bookmarklet','scrollbars=yes,width=600,height=<?php echo $bookmarklet_height ?>,left=100,top=150,status=yes'));"><?php printf(__('Press it - %s'), get_settings('blogname')); ?>
<?php
} else if ($is_macIE) {
?>
/wp-admin/bookmarklet.php?text='+escape(document.getSelection())+'&popupurl='+escape(location.href)+'&popuptitle='+escape(document.title)+'<?php echo $bookmarklet_tbpb ?>','bookmarklet','scrollbars=yes,width=600,height=<?php echo $bookmarklet_height ?>,left=100,top=150,status=yes'));btw.focus();"><?php printf(__('Press it - %s'), get_settings('blogname')); ?>
<?php
}
?>

</div>