Remove shenzhen rgb entrypoints

rgb protocols are not needed anymore since the rgb transform is applied
depending on the model used.

pyproject.toml

@@ -124,16 +124,6 @@ shenzhen_f6 = "ptbench.data.shenzhen.fold_6"
 shenzhen_f7 = "ptbench.data.shenzhen.fold_7"
 shenzhen_f8 = "ptbench.data.shenzhen.fold_8"
 shenzhen_f9 = "ptbench.data.shenzhen.fold_9"
-shenzhen_f0_rgb = "ptbench.data.shenzhen.fold_0_rgb"
-shenzhen_f1_rgb = "ptbench.data.shenzhen.fold_1_rgb"
-shenzhen_f2_rgb = "ptbench.data.shenzhen.fold_2_rgb"
-shenzhen_f3_rgb = "ptbench.data.shenzhen.fold_3_rgb"
-shenzhen_f4_rgb = "ptbench.data.shenzhen.fold_4_rgb"
-shenzhen_f5_rgb = "ptbench.data.shenzhen.fold_5_rgb"
-shenzhen_f6_rgb = "ptbench.data.shenzhen.fold_6_rgb"
-shenzhen_f7_rgb = "ptbench.data.shenzhen.fold_7_rgb"
-shenzhen_f8_rgb = "ptbench.data.shenzhen.fold_8_rgb"
-shenzhen_f9_rgb = "ptbench.data.shenzhen.fold_9_rgb"
 # extended shenzhen dataset (with radiological signs)
 shenzhen_rs = "ptbench.data.shenzhen_RS.default"
 shenzhen_rs_f0 = "ptbench.configs.datasets.shenzhen_RS.fold_0"