Utilities/Release: Drop unused release script

Utilities/Release/hythloth_release.cmake

-set(PROCESSORS 2)
-set(HOST hythloth)
-set(MAKE_PROGRAM "make")
-set(MAKE "${MAKE_PROGRAM} -j2")
-set(INITIAL_CACHE "
-CMAKE_BUILD_TYPE:STRING=Release
-CMAKE_SKIP_BOOTSTRAP_TEST:STRING=TRUE
-")
-get_filename_component(path "${CMAKE_CURRENT_LIST_FILE}" PATH)
-include(${path}/release_cmake.cmake)