Make REINCARNATION unconditional.

There is a lot of code affected by this, and Pat Rankin correctly
observes that it would be better to store roguelike as a level flag
rather than just using Is_rogue_level. A note for the future.

src/restore.c

@@ -857,9 +857,7 @@ register int fd;
 
 	if (!wizard && !discover)
 		(void) delete_savefile();
-#ifdef REINCARNATION
 	if (Is_rogue_level(&u.uz)) assign_graphics(ROGUESET);
-#endif
 #ifdef USE_TILES
 	substitute_tiles(&u.uz);
 #endif