scsi: ufs: core: Remove check_upiu_size() from ufshcd.h

Commit 68078d5c ("[SCSI] ufs: Set fDeviceInit flag to initiate device
initialization") added check_upiu_size(), but no caller.

Cc: Dolev Raviv <draviv@codeaurora.org>
Link: https://lore.kernel.org/r/20221103055349epcms2p338f2550c2dd78d00231a83b24719a3d4@epcms2p3


Signed-off-by: Keoseong Park <keosung.park@samsung.com>
Reviewed-by: Avri Altman <avri.altman@wdc.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>