Remove unused GpuAgent.local_region_ member.

Change-Id: I99526e6b1f64e810f7fed5d922c540d252a46d80

runtime/hsa-runtime/core/inc/amd_gpu_agent.h

@@ -433,8 +433,6 @@ class GpuAgent : public GpuAgentInt {
   // @brief Array of regions owned by this agent.
   std::vector<const core::MemoryRegion*> regions_;
 
-  MemoryRegion* local_region_;
-
   core::Isa* isa_;
 
   // @brief HSA profile.

runtime/hsa-runtime/core/runtime/amd_gpu_agent.cpp

@@ -83,7 +83,6 @@ GpuAgent::GpuAgent(HSAuint32 node, const HsaNodeProperties& node_props, bool xna
       current_coherency_type_(HSA_AMD_COHERENCY_TYPE_COHERENT),
       scratch_used_large_(0),
       queues_(),
-      local_region_(NULL),
       is_kv_device_(false),
       trap_code_buf_(NULL),
       trap_code_buf_size_(0),
@@ -358,7 +357,6 @@ void GpuAgent::InitRegionList() {
           regions_.push_back(region);
 
           if (region->IsLocalMemory()) {
-            local_region_ = region;
             // Expose VRAM as uncached/fine grain over PCIe (if enabled) or XGMI.
             if ((properties_.HiveID != 0) ||
                 (core::Runtime::runtime_singleton_->flag().fine_grain_pcie())) {