MdeModulePkg: UfsPassThruDxe: remove set but unused variables

Cc: Feng Tian <feng.tian@intel.com>
Cc: Star Zeng <star.zeng@intel.com>
Cc: Ruiyu Ni <ruiyu.ni@intel.com>
Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: Laszlo Ersek <lersek@redhat.com>
Reviewed-by: Jordan Justen <jordan.l.justen@intel.com>
Reviewed-by: Star Zeng <star.zeng@intel.com>
Reviewed-by: Feng Tian <feng.tian@intel.com>
Reviewed-by: Jeff Fan <jeff.fan@intel.com>

MdeModulePkg/Bus/Ufs/UfsPassThruDxe/UfsPassThru.c

@@ -605,10 +605,6 @@ UfsPassThruGetNextTarget (
   IN OUT UINT8                           **Target
   )
 {
-  UFS_PASS_THRU_PRIVATE_DATA      *Private;
-
-  Private = UFS_PASS_THRU_PRIVATE_DATA_FROM_THIS (This);
-
   if (Target == NULL || *Target == NULL) {
     return EFI_INVALID_PARAMETER;
   }