CMake: remove all Mac specific settings added per #2009, as they appe…

…ar to be obsolete given current CMake versions (fixes #3029)

And specifically remove set(CMAKE_INSTALL_RPATH_USE_LINK_PATH TRUE)
which was the only setting at a non-default value.

CMakeLists.txt

@@ -37,13 +37,6 @@ set(CMAKE_C_STANDARD_REQUIRED ON)
 set(CMAKE_C_EXTENSIONS OFF)
 message(STATUS "Requiring C${CMAKE_C_STANDARD} - done")
 
-set(CMAKE_SKIP_BUILD_RPATH FALSE)
-set(CMAKE_BUILD_WITH_INSTALL_RPATH FALSE)
-set(CMAKE_INSTALL_RPATH_USE_LINK_PATH TRUE)
-if(APPLE)
-    set(MACOSX_RPATH ON)
-endif()
-
 # Set global -fvisibility=hidden
 set(CMAKE_C_VISIBILITY_PRESET hidden)
 set(CMAKE_CXX_VISIBILITY_PRESET hidden)