removed GPU_/CPU_ prefix from gpu's sanity test

modules/ts/src/ts_perf.cpp

@@ -51,10 +51,6 @@ static void setCurrentThreadAffinityMask(int mask)
 }
 #endif
 
-#ifdef HAVE_CUDA
-# include <opencv2/core/gpumat.hpp>
-#endif
-
 namespace {
 
 class PerfEnvironment: public ::testing::Environment
@@ -556,13 +552,6 @@ Regression& Regression::operator() (const std::string& name, cv::InputArray arra
 
     std::string nodename = getCurrentTestNodeName();
 
-    // This is a hack for compatibility and it should eventually get removed.
-    // gpu's tests don't even have CPU sanity data anymore.
-    if(suiteName == "gpu")
-    {
-        nodename = (PERF_RUN_GPU() ? "GPU_" : "CPU_") + nodename;
-    }
-
     cv::FileNode n = rootIn[nodename];
     if(n.isNone())
     {