No more DPI adjusting

dan/ocr/transforms.py

docs/assets/augmentations/document_original.png

docs/assets/augmentations/document_random_scale.png

docs/assets/augmentations/line_full_pipeline_2.png

docs/assets/augmentations/line_original.png

docs/assets/augmentations/line_random_scale.png

docs/usage/train/augmentation.md

docs/usage/train/config.md

tests/data/training/models/best_0.pt

tests/data/training/models/last_3.pt