scsi: core: Fix a source code comment

Fix an incorrect reference to the scsi_remove_host() function in a source
code comment.

Link: https://lore.kernel.org/r/20230210205200.36973-2-bvanassche@acm.org
Fixes: b49493f9

 ("Fix a memory leak in scsi_host_dev_release()")
Signed-off-by: Bart Van Assche <bvanassche@acm.org>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>