mtd: inftlcore: fix repeated words in comments

Delete the redundant word 'it'.
Signed-off-by: Jilin Yuan <yuanjilin@cdjrlc.com>
Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>
Link: https://lore.kernel.org/linux-mtd/20221028134036.63000-1-yuanjilin@cdjrlc.com

drivers/mtd/inftlcore.c

@@ -356,7 +356,7 @@ static u16 INFTL_foldchain(struct INFTLrecord *inftl, unsigned thisVUC, unsigned
 	 * Newest unit in chain now contains data from _all_ older units.
 	 * So go through and erase each unit in chain, oldest first. (This
 	 * is important, by doing oldest first if we crash/reboot then it
-	 * it is relatively simple to clean up the mess).
+	 * is relatively simple to clean up the mess).
 	 */
 	pr_debug("INFTL: want to erase virtual chain %d\n", thisVUC);