Update spice remove cost tracker

[PCSwingle]

Pull Request Checklist

• Documentation has been updated, or this change doesn't require that

[mentatbot]

MENTAT CODE REVIEW IN ACTIVE DEVELOPMENT. Only in use on mentat and internal repos.
Please Reply with feedback.

This review focuses on ensuring code readability, maintainability, and the correct implementation of features and fixes. It's crucial to ensure that all changes are thoroughly tested, especially those that affect core functionalities like context management, command processing, and interaction with external APIs. Additionally, removing unused imports and code simplifies the project and reduces potential confusion for future developers. Overall, these changes contribute positively to the project's health and future development.