rank_filter.recipe/run_test.py: Drop `nose` import.
rank_filter.recipe/run_test.py: Drop `nose` import.

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