[Debt] Removes expectedClassifications, expectedSalary, expectedGenericJobTitle

[mnigh]

🤖 Resolves #5347.

👋 Introduction

This PR removes the expectedClassifications, expectedSalary, and expectedGenericJobTitle from the application and deprecates the fields in the API.

🕵️ Details

We no longer use these anywhere in the application so they are now redundant.

Note
Some references were left for compatibility reasons.

🎩 Acknowledgements

👏 @esizer, @yonikid15 for past work used as a reference.

🧪 Testing

1. Run refresh_api.sh
2. Build frontend
   1. npm run codegen
   2. npm run dev
3. Navigate to /admin/users
   1. Confirm classifications are gone from filters
   2. Confirm role and salary does not exist on view users
   3. Print a user and confirm expected role and salary does not appear
   4. Export CSV and confirm expected role and salary does not appear
4. Navigate to /users/:used-id/profile
   1. Confirm role and salary section does not appear
   2. Confirm you can still complete your profile
5. Create an application
   1. Confirm role and salary section does not appear
   2. Confirm you can complete the application with no role and salary expectations
6. Ensure no references to expectedClassifications, expectedSalary, expectedGenericJobTitle (other than deprecated ones in graphql schema)

[esizer]

Looks great! 👏