Temp workaround for boost asio defect

See chriskohlhoff/asio#533 for more information.
Remove the compiler flag -fno-rtti.

Similar change is made in bmcweb, ipmibridge
https://github.com/openbmc/ipmbbridge/commit/1f0b833940fb445f18278fb7c18a1b8031697198

Signed-off-by: Zhikui Ren <zhikui.ren@intel.com>
Change-Id: I36aad9bebf19ca0364f4f8249b2e985f38b902d4
diff --git a/CMakeLists.txt b/CMakeLists.txt
index d413ace..55b026e 100755
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -6,7 +6,8 @@
 set (DBUS_OBJECT_NAME "xyz/openbmc_project/Smbios/MDR_V2")
 set (DBUS_INTF_NAME "xyz.openbmc_project.Smbios.MDR_V2")
 
-set (CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -fno-rtti")
+# disable now to wa boost bug chriskohlhoff/asio#533
+# set (CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -fno-rtti")
 
 include_directories (
     ${CMAKE_CURRENT_SOURCE_DIR}/include/phosphor-dbus-interfaces