[Python][RF] Remove pythonizations of classes that are no longer public

Remove the pythonizations of, `RooNLLVar` and `RooChi2Var`, which are no
longer part of the public interface for some time.

Author: guitargeek

bindings/pyroot/pythonizations/CMakeLists.txt

@@ -30,7 +30,6 @@ if(roofit)
         ROOT/_pythonization/_roofit/_rooarglist.py
         ROOT/_pythonization/_roofit/_rooargset.py
         ROOT/_pythonization/_roofit/_roocategory.py
-        ROOT/_pythonization/_roofit/_roochi2var.py
         ROOT/_pythonization/_roofit/_roodatahist.py
         ROOT/_pythonization/_roofit/_roodataset.py
         ROOT/_pythonization/_roofit/_roodecays.py
@@ -39,7 +38,6 @@ if(roofit)
         ROOT/_pythonization/_roofit/_roojsonfactorywstool.py
         ROOT/_pythonization/_roofit/_roomcstudy.py
         ROOT/_pythonization/_roofit/_roomsgservice.py
-        ROOT/_pythonization/_roofit/_roonllvar.py
         ROOT/_pythonization/_roofit/_rooprodpdf.py
         ROOT/_pythonization/_roofit/_roorealvar.py
         ROOT/_pythonization/_roofit/_roosimultaneous.py

bindings/pyroot/pythonizations/python/ROOT/_pythonization/_roofit/__init__.py

@@ -24,7 +24,6 @@
 from ._rooarglist import RooArgList
 from ._rooargset import RooArgSet
 from ._roocategory import RooCategory
-from ._roochi2var import RooChi2Var
 from ._roodatahist import RooDataHist
 from ._roodataset import RooDataSet
 from ._roodecays import RooDecay, RooBDecay, RooBCPGenDecay, RooBCPEffDecay, RooBMixDecay
@@ -45,7 +44,6 @@
 from ._roojsonfactorywstool import RooJSONFactoryWSTool
 from ._roomcstudy import RooMCStudy
 from ._roomsgservice import RooMsgService
-from ._roonllvar import RooNLLVar
 from ._rooprodpdf import RooProdPdf
 from ._roorealvar import RooRealVar
 from ._roosimultaneous import RooSimultaneous
@@ -69,22 +67,20 @@
     RooBDecay,
     RooBMixDecay,
     RooCategory,
-    RooChi2Var,
     RooDataHist,
     RooDataSet,
     RooDecay,
     RooGenFitStudy,
     RooJSONFactoryWSTool,
     RooMCStudy,
     RooMsgService,
-    RooNLLVar,
     RooProdPdf,
     RooRealVar,
     RooSimultaneous,
     RooSimWSTool,
     RooWorkspace,
     RooVectorDataStore,
-    SPlot
+    SPlot,
 ]
 
 # list of python functions that are used to pythonize RooGlobalFunc function in RooFit
@@ -122,7 +118,7 @@ def get_defined_attributes(klass, consider_base_classes=False):
         "__weakref__",
         "__firstlineno__",
         "__static_attributes__",
-        "__cpp_name__"
+        "__cpp_name__",
     ]
 
     if not consider_base_classes: