Not needed to specify CMAKE_MACOSX_RPATH

As of CMake 3.0 with CMP0042, MACOSX_RPATH is enabled by default.
Since the validated version used by jsoncpp is later than 3.0,
this is already covered.

Author: mrjoel

CMakeLists.txt

@@ -95,11 +95,6 @@ option(JSONCPP_WITH_CMAKE_PACKAGE "Generate and install cmake package files" ON)
 option(JSONCPP_WITH_EXAMPLE "Compile JsonCpp example" OFF)
 option(BUILD_SHARED_LIBS "Build jsoncpp_lib as a shared library." OFF)
 
-# Enable runtime search path support for dynamic libraries on OSX
-if(APPLE)
-    set(CMAKE_MACOSX_RPATH 1)
-endif()
-
 # Adhere to GNU filesystem layout conventions
 include(GNUInstallDirs)