Downgrade dependencies requirement and remove empty utils/

Author: JerryLife

pyproject.toml

@@ -9,7 +9,7 @@ authors = [
     { name = "Junyi Hou" },
     { name = "Bingsheng He" }
 ]
-version = "0.1.1a0"
+version = "0.1.1a1"
 description = "A tool for benchmarking vertical federated learning algorithms, containing synthetic data split and data evaluation."
 readme = "README.md"
 license = { file = "LICENSE" }  # If you have a LICENSE file
@@ -31,11 +31,16 @@ urls = { "Homepage" = "https://github.com/Xtra-Computing/VertiBench" }
 # Define your console scripts under [project.scripts] if any in the future
 
 dependencies = [
-    "matplotlib>=3.7.2",
-    "numpy>=1.24.3",
-    "pymoo>=0.6.1.1",
-    "scikit-learn>=1.3.0",
-    "scipy>=1.11.4",
-    "shap>=0.43.0",
-    "torch>=2.1.1",
+    "matplotlib>=3.7",
+    "numpy==1.24",
+    "pymoo==0.6.1.1",
+    "scikit-learn==1.2",
+    "scipy>=1.10",
+    "shap==0.43",
+    "torch>=2.0",
+]
+
+[project.optional-dependencies]
+test = [
+    "xgboost>=2.0",
 ]