* remove unecessary ament_cmake_test

Signed-off-by: Mikael Arguedas <mikael.arguedas@gmail.com>

* remove ament_lint_auto dependency

Signed-off-by: Mikael Arguedas <mikael.arguedas@gmail.com>

* add back ament_cmake_test with comment

Signed-off-by: Mikael Arguedas <mikael.arguedas@gmail.com>