nanshe/advanced_image_processing.py: Cut down memory usage in remove_zeroed_lines by removing a temporary.
nanshe/advanced_image_processing.py: Cut down memory usage in remove_zeroed_lines by removing a temporary.

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