[configs.datasets] Removed legacy RS configurations

src/ptbench/configs/datasets/hivtb_RS/__init__.py

src/ptbench/configs/datasets/hivtb_RS/fold_0.py

src/ptbench/configs/datasets/hivtb_RS/fold_1.py

src/ptbench/configs/datasets/hivtb_RS/fold_2.py

src/ptbench/configs/datasets/hivtb_RS/fold_3.py

src/ptbench/configs/datasets/hivtb_RS/fold_4.py

src/ptbench/configs/datasets/hivtb_RS/fold_5.py

src/ptbench/configs/datasets/hivtb_RS/fold_6.py

src/ptbench/configs/datasets/hivtb_RS/fold_7.py

src/ptbench/configs/datasets/hivtb_RS/fold_8.py

src/ptbench/configs/datasets/hivtb_RS/fold_9.py

src/ptbench/configs/datasets/indian_RS/__init__.py

src/ptbench/configs/datasets/indian_RS/default.py

src/ptbench/configs/datasets/indian_RS/fold_0.py

src/ptbench/configs/datasets/indian_RS/fold_1.py

src/ptbench/configs/datasets/indian_RS/fold_2.py

src/ptbench/configs/datasets/indian_RS/fold_3.py

src/ptbench/configs/datasets/indian_RS/fold_4.py

src/ptbench/configs/datasets/indian_RS/fold_5.py

src/ptbench/configs/datasets/indian_RS/fold_6.py