Remove CTestConfig.cmake, the repo isn't using my.cdash.org

CTestConfig.cmake

-## This file should be placed in the root directory of your project.
-## Then modify the CMakeLists.txt file in the root directory of your
-## project to incorporate the testing dashboard.
-## # The following are required to uses Dart and the Cdash dashboard
-##   ENABLE_TESTING()
-##   INCLUDE(CTest)
-set(CTEST_PROJECT_NAME "kcalc")
-set(CTEST_NIGHTLY_START_TIME "20:00:00 CET")
-
-set(CTEST_DROP_METHOD "http")
-set(CTEST_DROP_SITE "my.cdash.org")
-set(CTEST_DROP_LOCATION "/submit.php?project=kcalc")
-set(CTEST_DROP_SITE_CDASH TRUE)