Moved old configurations to old dir

config/old/20d5-exp_corr.json

config/old/20d5-mix.json

config/old/20d6-vf.json

config/old/2d-corr.json

config/old/2d-exp_corr.json

config/old/2d-mix.json

config/old/2d-noise.json

config/old/2d-vf.json

config/old/4d-corr.json

config/old/4d-exp_corr.json

config/old/4d-noise.json

config/old/4d-vf.json

config/old/4d1-corr.json

config/old/4d1-noise.json

config/old/4d1-vf.json

config/old/6d1-corr.json

config/old/6d1-noise.json

config/old/6d1-vf.json

config/old/6d2-vf.json

config/old/6d3-corr.json