SWDEV-232197 - Fix PAL build

Change-Id: Iad306077cadfd8de1491ac0a188eee4802d8ce1f

rocclr/device/pal/palprogram.hpp

@@ -239,7 +239,6 @@ class LightningProgram : public HSAILProgram {
   LightningProgram(NullDevice& device, amd::Program& owner) : HSAILProgram(device, owner) {
     isLC_ = true;
     isHIP_ = (owner.language() == amd::Program::HIP);
-    xnackEnabled_ = dev().hwInfo()->xnackEnabled_;
     machineTarget_ = dev().hwInfo()->machineTargetLC_;
   }