Remove duplicate tests

ECM already sets up tests for all found python versions.

autotests/CMakeLists.txt

@@ -33,11 +33,3 @@ ecm_add_test(kselectionproxymodel_smoketest.cpp ${proxyModelSmokeTestSources}
   TEST_NAME "kselectionproxymodel_smoketest"
   LINK_LIBRARIES KF5::ItemModels Qt5::Test Qt5::Widgets proxymodeltestsuite
 )
-
-if (PythonModuleGeneration_FOUND AND EXISTS ${CMAKE_BINARY_DIR}/prefix/lib/python2.7/dist-packages)
-  add_test(NAME Py2${name} COMMAND python2 ${pythontest} ${CMAKE_BINARY_DIR}/prefix/lib/python2.7/dist-packages)
-endif()
-
-if (PythonModuleGeneration_FOUND AND EXISTS ${CMAKE_BINARY_DIR}/prefix/lib/python3.5/dist-packages)
-  add_test(NAME Py3${name} COMMAND python3 ${pythontest} ${CMAKE_BINARY_DIR}/prefix/lib/python3.5/dist-packages)
-endif()