refactor: simplify remove_route method signature

[unship]

Motivation and Context

i need conditional present tool to llm because too much tool is a waste of context length, so i need remove_route function. but i found the signature of this function is wired

How Has This Been Tested?

delete will pass my local mcp

Breaking Changes

maybe, but nessasary

Types of changes

• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to change)
• Documentation update

Checklist

• I have read the MCP Documentation
• My code follows the repository's style guidelines
• New and existing tests pass locally
• I have added appropriate error handling
• I have added or updated documentation as needed

Additional context

[4t145]

Thanks!