[all] Remove unused imports

bob/ip/binseg/configs/datasets/amdrive.py

bob/ip/binseg/configs/datasets/amdrivetest.py

...binseg/configs/datasets/drivestareiostarhrf960sslchase.py

bob/ip/binseg/configs/models/driu.py

bob/ip/binseg/configs/models/driubn.py

bob/ip/binseg/configs/models/driubnssl.py

bob/ip/binseg/configs/models/driuod.py

bob/ip/binseg/configs/models/driussl.py

bob/ip/binseg/configs/models/hed.py

bob/ip/binseg/configs/models/m2unet.py

bob/ip/binseg/configs/models/m2unetssl.py

bob/ip/binseg/configs/models/resunet.py

bob/ip/binseg/configs/models/unet.py

bob/ip/binseg/data/imagefolderinference.py

bob/ip/binseg/data/transforms.py

bob/ip/binseg/engine/inferencer.py

bob/ip/binseg/engine/predicter.py

bob/ip/binseg/modeling/resunet.py

bob/ip/binseg/modeling/unet.py

bob/ip/binseg/script/binseg.py