Makefile cleanup: remove workaround for 11yo boost problem
There's a tradition that doesn't want to die. A long time ago someone added a work around for boost 1.40 problem. The referenced boost ticket was closed 11 years ago.
# Some versions of GCC warn about some versions of Boost regarding
# missing initializer for members in its posix_time.
# https://svn.boost.org/trac/boost/ticket/3477
# But older GCC compilers don't have the flag.
AM_CXXFLAGS += $(WARNING_NO_MISSING_FIELD_INITIALIZERS_CFLAG)
Bugs are not whisky... 11yo is bad.
It seems this was cleaned up in the core code, but not in premium.