on page 6 of the manual, it shows clearances. http://downloads.hearthnhome.com/installManuals/2065_985.pdf 

letter G in figure 3.2 shows a zero clearance to combustible materials, so you should be good to go if you want to remove it and put whatever flooring you want right up to it. if that is terrazzo, it won't be much fun to remove. hope this helps.