scsi: core: Fix comment typo

s/remoed/removed/

Link: https://lore.kernel.org/r/20210326060902.1851811-1-pinganddu90@gmail.com


Signed-off-by: dudengke <dengke.du@ucas.com.cn>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>