scsi: target: pscsi: Remove repeated word "calling"

There is repeated word, remove it.

Link: https://lore.kernel.org/r/[e-mail]
Reviewed-by: Chaitanya Kulkarni <[e-mail]>
Signed-off-by: Shaomin Deng <[e-mail]>
Signed-off-by: Martin K. Petersen <[e-mail]>

drivers/target/target_core_pscsi.c

···
 			continue;
 		/*
 		 * Functions will release the held struct scsi_host->host_lock
-		 * before calling calling pscsi_add_device_to_list() to register
+		 * before calling pscsi_add_device_to_list() to register
 		 * struct scsi_device with target_core_mod.
 		 */
 		switch (sd->type) {