rank_filter.recipe/build.sh: Drop C++11 flags.
rank_filter.recipe/build.sh: Drop C++11 flags.

DudLab/rank_filter,DudLab/rank_filter,nanshe-org/rank_filter,nanshe-org/rank_filter,jakirkham/rank_filter,DudLab/rank_filter,jakirkham/rank_filter,jakirkham/rank_filter,nanshe-org/rank_filter