message: Remove unused CMake target
diff: @@ -5,8 +5,6 @@ project(caf_opencl C CXX)
  # e.g., for creating proper Xcode projects
  file(GLOB_RECURSE LIBCAF_OPENCL_HDRS "caf/*.hpp")
  -add_custom_target(libcaf_opencl)
  -
  # list cpp files excluding platform-dependent files
  set(LIBCAF_OPENCL_SRCS
  src/device.cpp
  