Deleted old configs

configs/architectures/double_subs.yml

configs/architectures/encoder_decoder.yml

configs/architectures/encoder_only.yml

configs/architectures_small/double_subs.yml

configs/architectures_small/encoder_decoder.yml

configs/architectures_small/encoder_only.yml

configs/dropout/low.yml

configs/dropout/medium.yml

configs/mnist_debug.yml

configs/mnist_s.yml

configs/mnist_xs.yml

configs/mnist_xxs.yml

configs/num_heads/low.yml

configs/num_heads/medium.yml

configs/shapenet_autoencoder.yml

configs/shapenet_concat_split.yml

configs/shapenet_debug.yml

configs/shapenet_intertwined.yml

configs/shapenet_layerwise.yml

configs/shapenet_long.yml