Add comment about unused rows and cols In BNTImporter
Add comment about unused rows and cols
In BNTImporter

jabooth/menpo-archive,jabooth/menpo-archive,menpo/menpo,mozata/menpo,menpo/menpo,jabooth/menpo-archive,grigorisg9gr/menpo,mozata/menpo,yuxiang-zhou/menpo,patricksnape/menpo,jabooth/menpo-archive,grigorisg9gr/menpo,patricksnape/menpo,grigorisg9gr/menpo,mozata/menpo,mozata/menpo,yuxiang-zhou/menpo,menpo/menpo,patricksnape/menpo,yuxiang-zhou/menpo