remove bogus assert (leftover from some long-forgotten debugging session)

git-svn-id: http://skia.googlecode.com/svn/trunk@3240 2bbb7eff-a529-9590-31e7-b0007b416f81

src/core/SkBlitter.cpp

@@ -247,8 +247,6 @@ static int compute_anti_width(const int16_t runs[]) {
         }
         width += count;
         runs += count;
-
-        SkASSERT(width < 20000);
     }
     return width;
 }