remove Font.next_power_of_2()

src/jes/gui/font.d

@@ -48,16 +48,4 @@ class Font
     {
         Font_Free(font);
     }
-
-    uint next_power_of_2(uint n)
-    {
-        n--;
-        n |= n >> 1u;
-        n |= n >> 2u;
-        n |= n >> 4u;
-        n |= n >> 8u;
-        n |= n >> 16u;
-        n++;
-        return n;
-    }
 }