remove unsed state in vhdl code

ModNEF_Sources/modules/bias.vhd

ModNEF_Sources/modules/neurons/BLIF/blif_parallel.vhd

ModNEF_Sources/modules/neurons/BLIF/blif_sequential.vhd

ModNEF_Sources/modules/neurons/BLIF/rblif_sequential.vhd

ModNEF_Sources/modules/neurons/SLIF/rslif_sequential.vhd

ModNEF_Sources/modules/neurons/SLIF/slif_parallel.vhd

ModNEF_Sources/modules/neurons/SLIF/slif_sequential.vhd

...Sources/modules/neurons/ShiftLif/rshiftlif_sequential.vhd

...EF_Sources/modules/neurons/ShiftLif/shiftlif_parallel.vhd

..._Sources/modules/neurons/ShiftLif/shiftlif_sequential.vhd

...lib/modnef/modnef_torch/modnef_neurons/blif_model/blif.py

...ib/modnef/modnef_torch/modnef_neurons/blif_model/rblif.py

...ib/modnef/modnef_torch/modnef_neurons/slif_model/rslif.py

...lib/modnef/modnef_torch/modnef_neurons/slif_model/slif.py

...dnef/modnef_torch/modnef_neurons/srlif_model/rshiftlif.py

...odnef/modnef_torch/modnef_neurons/srlif_model/shiftlif.py

modneflib/modnef/quantizer/dynamic_scale_quantizer.py

modneflib/modnef/quantizer/fixed_point_quantizer.py

modneflib/modnef/quantizer/min_max_quantizer.py

modneflib/modnef/quantizer/quantizer.py