[backport iron] stereo_image_proc: cleanup cmake (#904) (#908)

This was supposed to be switched over when e-turtle rolled out. J-turtle
ain't that late...

backport #904

Co-authored-by: Michael Ferguson <mfergs7@gmail.com>

stereo_image_proc/CMakeLists.txt

@@ -45,22 +45,13 @@ if(BUILD_TESTING)
  set(PYTHON_EXECUTABLE "${PYTHON_EXECUTABLE_DEBUG}")
  endif()
 
- # Test DisparityNode in launch test
- add_launch_test("test/test_disparity_node.py"
+ ament_add_pytest_test("test_disparity_node" test/test_disparity_node.py
  PYTHON_EXECUTABLE "${PYTHON_EXECUTABLE}"
  )
- # TODO(jacobperron): As of Eloquent, they're just plain pytests
- # ament_add_pytest_test("test_disparity_node" test/test_disparity_node.py
- # PYTHON_EXECUTABLE "${PYTHON_EXECUTABLE}"
- # )
 
- # Test PointCloudNode in launch test
- add_launch_test("test/test_point_cloud_node.py"
+ ament_add_pytest_test("test_point_cloud_node" test/test_point_cloud_node.py
  PYTHON_EXECUTABLE "${PYTHON_EXECUTABLE}"
  )
- # ament_add_pytest_test("test_point_cloud_node" test/test_point_cloud_node.py
- # PYTHON_EXECUTABLE "${PYTHON_EXECUTABLE}"
- # )
 
  set(PYTHON_EXECUTABLE "${_PYTHON_EXECUTABLE}")
 endif()