Simplify the postprocessing of cling/array/array1test - not enough to…

[Axel-Naumann]

… get rid of it.

[phsft-bot]

Starting build on ROOT-debian10-i386/cxx14, ROOT-performance-centos8-multicore/default, ROOT-ubuntu16/nortcxxmod, mac1014/python3, mac11.0/cxx17, windows10/cxx14 How to customize builds

[phsft-bot]

Build failed on ROOT-debian10-i386/cxx14. Running on pcepsft10.dyndns.cern.ch:/build/workspace/roottest-pullrequests-build See console output.

Failing tests:

• projectroot.roottest.python.cpp.roottest_python_cpp_cpp

[phsft-bot]

Build failed on mac11.0/cxx17. Running on macphsft20.dyndns.cern.ch:/Users/sftnight/build/workspace/roottest-pullrequests-build See console output.

Failing tests:

• projectroot.runtutorials.tutorial_roofit_rf408_RDataFrameToRooFit_py
• projectroot.bindings.pyroot.pythonizations.test.pyunittests_pyroot_pyz_rdataframe_makenumpy
• projectroot.bindings.pyroot.pythonizations.test.pyunittests_pyroot_pyz_rtensor
• projectroot.roottest.python.distrdf.roottest_python_distrdf_spark_test_inv_mass