Remove copied froms for deprecated models (#31153)

* Remove copied froms for deprecated models

* Remove automatically in script

utils/deprecate_models.py

@@ -124,6 +124,25 @@ def update_relative_imports(filename, model):
         f.write("\n".join(new_file_lines))
 
 
+def remove_copied_from_statements(model):
+    model_path = REPO_PATH / f"src/transformers/models/{model}"
+    for file in os.listdir(model_path):
+        if file == "__pycache__":
+            continue
+        file_path = model_path / file
+        with open(file_path, "r") as f:
+            file_lines = f.read()
+
+        new_file_lines = []
+        for line in file_lines.split("\n"):
+            if "# Copied from" in line:
+                continue
+            new_file_lines.append(line)
+
+        with open(file_path, "w") as f:
+            f.write("\n".join(new_file_lines))
+
+
 def move_model_files_to_deprecated(model):
     model_path = REPO_PATH / f"src/transformers/models/{model}"
     deprecated_model_path = REPO_PATH / f"src/transformers/models/deprecated/{model}"
@@ -321,6 +340,10 @@ def deprecate_models(models):
         print("Adding tip message to model doc page")
         insert_tip_to_model_doc(model_info["model_doc_path"], tip_message)
 
+        # Remove #Copied from statements from model's files
+        print("Removing #Copied from statements from model's files")
+        remove_copied_from_statements(model)
+
         # Move the model file to deprecated: src/transfomers/models/model -> src/transformers/models/deprecated/model
         print("Moving model files to deprecated for model")
         move_model_files_to_deprecated(model)