[RF][RS] Remove unused DebuggingSampler and DebuggingTestStat classes

These were mock implementations of the TestStatSampler and
TestStatistic interfaces that returned uniform random numbers
independent of the data. They were only meant for debugging the
RooStats framework itself during its initial development and are
referenced nowhere else in the codebase, tutorials, or tests.

They were also never fully functional: DebuggingSampler's
GetTestStatistic() only prints "IS NOT IMPLEMENTED" and returns a
nullptr, and DebuggingTestStat leaks its data members because it lacks
a destructor.

Author: guitargeek

README/ReleaseNotes/v642/index.md

@@ -51,6 +51,7 @@ The following people have contributed to this new version:
 * The conversion from Python set to **RooArgSet** is deprecated and won't work anymore in ROOT 6.44. The problem is that Python sets are unordered while RooArgSets are ordered, and this mismatch can lead to subtle problems later on. Prefer conversion from Python lists or tuples, which are ordered too.
 * The ROOT IO capability for the `TMVA::Experimental::SOFIE::RModel` has been removed. Users should not be encouraged to serialize models in experimental classes. For the serialization of ONNX models one can already use ONNX directly, and even serialize the ONNX bytes to a ROOT file if required.
 * The **JsMVA** feature for interactive TMVA training in Jupyter notebooks is now removed. It was not functional for years and was therefore already excluded from ROOT 6.38. This also removes the `TMVA::IPythonInteractive` class and the related interactive-training interfaces from the TMVA method and fitter classes, such as `MethodBase::ExitFromTraining()` or `FitterBase::SetIPythonInteractive()`.
+* The **RooStats::DebuggingSampler** and **RooStats::DebuggingTestStat** classes are removed. They were mock implementations of the `TestStatSampler` and `TestStatistic` interfaces that returned uniform random numbers independent of the data, only meant for debugging the RooStats framework itself during its initial development.
 
 ## Python Interface
 

roofit/roostats/CMakeLists.txt

@@ -22,8 +22,6 @@ ROOT_STANDARD_LIBRARY_PACKAGE(RooStats
     RooStats/CombinedCalculator.h
     RooStats/ConfidenceBelt.h
     RooStats/ConfInterval.h
-    RooStats/DebuggingSampler.h
-    RooStats/DebuggingTestStat.h
     RooStats/DetailedOutputAggregator.h
     RooStats/FeldmanCousins.h
     RooStats/FrequentistCalculator.h

roofit/roostats/inc/LinkDef.h

@@ -54,12 +54,10 @@
 #pragma link C++ class RooStats::DetailedOutputAggregator+;
 
 #pragma link C++ class RooStats::TestStatSampler+; // interface, not concrete
-#pragma link C++ class RooStats::DebuggingSampler+;
 #pragma link C++ class RooStats::ToyMCSampler+;
 #pragma link C++ class RooStats::ToyMCImportanceSampler+;
 
 #pragma link C++ class RooStats::TestStatistic+; // interface
-#pragma link C++ class RooStats::DebuggingTestStat+;
 #pragma link C++ class RooStats::ProfileLikelihoodTestStat+;
 #pragma link C++ class RooStats::RatioOfProfiledLikelihoodsTestStat+;
 #pragma link C++ class RooStats::NumEventsTestStat+;