s390/sclp: Fix typo in comments

Remove the repeated word 'and' from comments

Signed-off-by: Jiang Jian <jiangjian@cdjrlc.com>
Reviewed-by: Kees Cook <keescook@chromium.org>
Link: https://lore.kernel.org/r/20220622142713.14187-1-jiangjian@cdjrlc.com
Signed-off-by: Alexander Gordeev <agordeev@linux.ibm.com>

Author: Jiang Jian

drivers/s390/char/sclp.c

@@ -60,7 +60,7 @@ static LIST_HEAD(sclp_reg_list);
 /* List of queued requests. */
 static LIST_HEAD(sclp_req_queue);
 
-/* Data for read and and init requests. */
+/* Data for read and init requests. */
 static struct sclp_req sclp_read_req;
 static struct sclp_req sclp_init_req;
 static void *sclp_read_sccb;