[poppler] Remove unused var

[Jeff Muizelaar]

On Thu, Apr 14, 2005 at 12:28:50AM +0200, Albert Astals Cid wrote:
> I wondered what a SplashBitmap was doing in cairo when doing a grep, and it 
> seems it was doing nothing so we better remove it, no?
> 
> Albert

applied.

-Jeff