Revert "build: fix newer boost build with c++11"
Revert "build: fix newer boost build with c++11"

This reverts commit b513bc41337c9c983acdc199ce9b42382c23b658.

Electronic-Gulden-Foundation/egulden,Electronic-Gulden-Foundation/egulden,tropa/axecoin,tropa/axecoin,tropa/axecoin,Electronic-Gulden-Foundation/egulden,tropa/axecoin,Electronic-Gulden-Foundation/egulden,Electronic-Gulden-Foundation/egulden,tropa/axecoin,Electronic-Gulden-Foundation/egulden,tropa/axecoin