109e6022beb0920f2a4746bd8c541e975494f251 introduced "-lboost_system" into
example/librados/Makefile but the Boost system library is no longer required
to compile and link hello_world.cc.
Fixes: http://tracker.ceph.com/issues/25054
Signed-off-by: Nathan Cutler <ncutler@suse.com>
CXX?=g++
CXX_FLAGS?=-std=c++11 -Wall -Wextra -Werror -g
-CXX_LIBS?=-lboost_system -lrados -lradosstriper
+CXX_LIBS?=-lrados -lradosstriper
CXX_INC?=$(LOCAL_LIBRADOS_INC)
CXX_CC=$(CXX) $(CXX_FLAGS) $(CXX_INC) $(LOCAL_LIBRADOS)