GPU: Remove some unused code

Author: davidrohr

GPU/GPUTracking/Base/GPUReconstruction.h

@@ -348,7 +348,6 @@ class GPUReconstruction
   std::vector<std::array<uint32_t, 4>>* mOutputErrorCodes = nullptr;
 
   int32_t mMaxBackendThreads = 0;       // Maximum number of threads that may be running, on CPU or GPU
-  int32_t mThreadId = -1;               // Thread ID that is valid for the local CUDA context
   int32_t mGPUStuck = 0;                // Marks that the GPU is stuck, skip future events
   int32_t mNStreams = 1;                // Number of parallel GPU streams
   int32_t mMaxHostThreads = 0;          // Maximum number of OMP threads

GPU/GPUTracking/Base/GPUReconstructionCPU.cxx

@@ -211,7 +211,6 @@ int32_t GPUReconstructionCPU::InitDevice()
   if (mProcessingSettings.inKernelParallel) {
     mBlockCount = mMaxHostThreads;
   }
-  mThreadId = GetThread();
   mProcShadow.mProcessorsProc = processors();
   return 0;
 }
@@ -241,12 +240,6 @@ int32_t GPUReconstructionCPU::RunChains()
       return retVal;
     }
   } else {
-    if (mThreadId != GetThread()) {
-      if (mProcessingSettings.debugLevel >= 2) {
-        GPUInfo("Thread changed, migrating context, Previous Thread: %d, New Thread: %d", mThreadId, GetThread());
-      }
-      mThreadId = GetThread();
-    }
     if (mSlaves.size() || mMaster) {
       WriteConstantParams(); // Reinitialize // TODO: Get this in sync with GPUChainTracking::DoQueuedUpdates, and consider the doublePipeline
     }

GPU/GPUTracking/Base/GPUReconstructionDeviceBase.cxx

@@ -102,7 +102,6 @@ int32_t GPUReconstructionDeviceBase::InitDevice()
     GPUError("Too many straems requested %d > %d\n", mProcessingSettings.nStreams, GPUCA_MAX_STREAMS);
     return (1);
   }
-  mThreadId = GetThread();
 
   void* semLock = nullptr;
   if (mProcessingSettings.globalInitMutex && GetGlobalLock(semLock)) {