Remove UnusedFunctionCheckRunForGeneratedSourcesIfStampfileExistsVerify.cmake

The stampfile was actually being removed on the clean step, which means that
this test didn't actually test what we wanted it to.
Move to newer tooling-cmake-util version
Merge pull request #32 from smspillaz/cppcheck-target-cmake.item_31

Move to newer tooling-cmake-find-package-util