How to remove PAGE SUM in Views Calc?
You can achieve this in two ways

1) Add following style in your CSS  

tr.view-subfooter-number{ display: none; }


OR

2) Go to  views-calc-table.tpl.php file under views_calc module directory and find the following code (PAGE SUM row code) 

  &lt;tr class="view-subfooter-number"&gt;
    &lt;?php foreach ($row as $field =&gt; $content): ?&gt;
      &lt;td class="view-subfooter views-field views-field-&lt;?php print $fields[$field]; ?&gt;  &lt;?php print $options['info'][$field]['align'] ?&gt;"&gt;
        &lt;?php print $content; ?&gt;
      &lt;/td&gt;
    &lt;?php endforeach; ?&gt;
  &lt;/tr&gt;


You can comment/remove the above code to hide 'PAGE SUM' row at view output.