scsi: ufs: ufs-pci: Remove control of UIC Completion interrupt for Intel MTL

Now that UFS core enables the UIC Completion interrupt only when needed,
Intel MTL driver no longer needs to control the interrupt itself.  So
remove the associated code.

Signed-off-by: Adrian Hunter <adrian.hunter@intel.com>
Link: https://lore.kernel.org/r/20250723165856.145750-9-adrian.hunter@intel.com


Reviewed-by: Bart Van Assche <bvanassche@acm.org>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>