refactor: market module

[maxwellmattryan]

Summary

Please summarize your changes, describing what they are and why they were made.

This PR removes market-related code as it is unused and has been for a long time. It is likely any future market data fetching will be re-written anyway.

Changelog

- Remove lib and type files for market

Relevant Issues

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Closes #3976

Testing

Platforms

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• Desktop
  • MacOS
  • Linux
  • Windows
• Mobile
  • iOS
  • Android

Instructions

Please describe the specific instructions, configurations, and/or test cases necessary to test and verify that your changes work as intended.

Test that switching currency still works.

Checklist

Please tick all of the following boxes that are relevant to your changes.

• I have followed the contribution guidelines for this project
• I have performed a self-review of my own code
• I have commented my code, particularly in hard-to-understand areas
• I have added or modified tests that prove my changes work as intended
• I have verified that new and existing unit tests pass locally with my changes
• I have verified that my latest changes pass CI workflows for testing and linting
• I have made corresponding changes to the documentation

[Tuditi]

Firefly didn't compile due to market.ts being imported in helpers.ts. I removed the relevant code parts, but let's get this merged, so that it doesn't go down the same path as the other refactors :D