exclude unused files for CoreMLConversion (#29)

Author: weiyanlin117

Package.swift

@@ -99,6 +99,41 @@ let package = Package(
                         .product(name: "sfmt", package: "ccv"),
             ],
             path: "nnc",
+            exclude: [
+                "C_ccv",
+                "C_nnc",
+                "C_sfmt",
+                "C_zlib",
+                "C_sqlite3",
+                "BUILD.bazel",
+                "PythonConversion.swift",
+                "MuJoCoConversion.swift",
+                "AnyModel.swift",
+                "AutoGrad.swift",
+                "DataFrame.swift",
+                "DataFrameAddons.swift",
+                "DataFrameCore.swift",
+                "DynamicGraph.swift",
+                "Functional.swift",
+                "FunctionalAddons.swift",
+                "GradScaler.swift",
+                "Group.swift",
+                "Hint.swift",
+                "Loss.swift",
+                "Model.swift",
+                "ModelAddons.swift",
+                "ModelBuilder.swift",
+                "ModelCore.swift",
+                "ModelIOAddons.swift",
+                "Operators.swift",
+                "Optimizer.swift",
+                "OptimizerAddons.swift",
+                "Store.swift",
+                "StreamContext.swift",
+                "Tensor.swift",
+                "TensorGroup.swift",
+                "Wrapped.swift",
+            ],
             sources: ["CoreMLConversion.swift"]
         ),