feat: remove redundant project attribution comments from GNS3-Copilot modules

Removed repetitive "This module is part of the GNS3-Copilot project" and GitHub URL comments from multiple module docstrings. These comments were redundant since the project information is already established in the main package documentation. This cleanup improves code readability and reduces maintenance overhead by eliminating duplicate attribution statements across the codebase.

gns3server/agent/gns3_copilot/tools_v2/gns3_create_node.py

@@ -21,8 +21,6 @@
 #
 """
 
-This module is part of the GNS3-Copilot project.
-GitHub: https://github.com/yueguobin/gns3-copilot
 GNS3 node creation tool for network topology building.
 
 Provides functionality to create multiple nodes in GNS3 projects
@@ -42,7 +40,6 @@ from gns3server.agent.gns3_copilot.gns3_client import Node, get_gns3_connector
 # Configure logging
 logger = logging.getLogger(__name__)
 
-
 class GNS3CreateNodeTool(BaseTool):
     """
     A LangChain tool to create multiple nodes in a GNS3 project
@@ -267,7 +264,6 @@ class GNS3CreateNodeTool(BaseTool):
             logger.error("Failed to process node creation request: %s", e)
             return {"error": f"Failed to process node creation request: {str(e)}"}
 
-
 if __name__ == "__main__":
     # Test the tool locally with multiple nodes
     test_input = json.dumps(