I've been searching around and struggling to find a conclusive answer to this.
I've followed the steps mentioned here: http://nsmchami.wordpress.com/2014/03/15/magento-remove-tax-from-invoice/
Which has removed the "Tax" header in the column, but it's still displaying the price, like so:
So the question is how can I remove this price from the Invoice PDF?
Any help will be hugely appreciated.