sis5513: remove stale TODO

Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
diff --git a/drivers/ide/sis5513.c b/drivers/ide/sis5513.c
index 3b88eba..4687060 100644
--- a/drivers/ide/sis5513.c
+++ b/drivers/ide/sis5513.c
@@ -632,12 +632,3 @@
 MODULE_AUTHOR("Lionel Bouton, L C Chang, Andre Hedrick, Vojtech Pavlik");
 MODULE_DESCRIPTION("PCI driver module for SIS IDE");
 MODULE_LICENSE("GPL");
-
-/*
- * TODO:
- *	- CLEANUP
- *	- More checks in the config registers (force values instead of
- *	  relying on the BIOS setting them correctly).
- *	- Further optimisations ?
- *	  . for example ATA66+ regs 0x48 & 0x4A
- */