Remove R programming language interface that was deprecated in 6.40

Remove R programming language interface that was deprecated in 6.40 and
scheduled for removal in 6.42.

Author: guitargeek

.github/workflows/root-ci-config/buildconfig/alma10-benchmark.txt

@@ -1,5 +1,4 @@
 CMAKE_CXX_STANDARD=20
 builtin_vdt=ON
 pythia8=ON
-r=OFF
 rootbench=ON

.github/workflows/root-ci-config/buildconfig/alma10-clang_ninja.txt

@@ -21,5 +21,4 @@ builtin_xxhash=ON
 builtin_zlib=ON
 builtin_zstd=ON
 pythia8=ON
-r=OFF
 soversion=ON

.github/workflows/root-ci-config/buildconfig/alma10.txt

@@ -1,3 +1,2 @@
 builtin_vdt=ON
 pythia8=ON
-r=OFF

.github/workflows/root-ci-config/buildconfig/global.txt

@@ -63,7 +63,6 @@ opengl=ON
 pyroot=ON
 pythia8=OFF
 qt6web=OFF
-r=ON
 roofit=ON
 roofit_multiprocess=OFF
 root7=ON
@@ -83,7 +82,6 @@ tmva-cpu=ON
 tmva-gpu=OFF
 tmva-cudnn=OFF
 tmva-pymva=OFF
-tmva-rmva=OFF
 tmva-sofie=ON
 tmva=ON
 unfold=ON

.github/workflows/root-ci-config/buildconfig/mac-beta.txt

@@ -22,6 +22,5 @@ check_connection=ON
 cocoa=ON
 davix=OFF
 minuit2_omp=OFF
-r=OFF
 tmva-sofie=OFF
 x11=OFF

.github/workflows/root-ci-config/buildconfig/mac14.txt

@@ -25,7 +25,6 @@ cocoa=ON
 davix=OFF
 fortran=OFF
 minuit2_omp=OFF
-r=OFF
 test_distrdf_dask=OFF
 test_distrdf_pyspark=OFF
 x11=OFF

.github/workflows/root-ci-config/buildconfig/mac15.txt

@@ -20,5 +20,4 @@ builtin_zstd=ON
 cocoa=ON
 davix=OFF
 minuit2_omp=OFF
-r=OFF
 x11=OFF

.github/workflows/root-ci-config/buildconfig/mac26.txt

@@ -22,6 +22,5 @@ check_connection=ON
 cocoa=ON
 davix=OFF
 minuit2_omp=OFF
-r=OFF
 tmva-sofie=OFF
 x11=OFF

.github/workflows/root-ci-config/buildconfig/opensuse16-march_native.txt

@@ -11,4 +11,3 @@ test_distrdf_pyspark=OFF
 tmva-pymva=ON
 tmva-sofie=ON
 pythia8=OFF
-r=OFF

.github/workflows/root-ci-config/buildconfig/ubuntu22.txt

@@ -1,5 +1,4 @@
 builtin_unuran=ON
 builtin_vdt=ON
-r=ON
 test_distrdf_dask=OFF
 test_distrdf_pyspark=OFF