Feature: Remove unused sanity schemas.

[shamimbinnur]

Type of feature

🧑‍💻 Refactor

Current behavior

There are some sanity schemas left over in the project which are no longer required.

1. about.js
2. calender.js
3. feature.js
4. githubMock.js

Suggested solution

Double check that deleting those schemas not gonna break anything. Then remove the schemas and associated dead code.

Additional context

There are some copies that are still static on the site. We can take on this PR after connecting all remaining copies to sanity.

No response

Code of Conduct

• I agree to follow this project's Code of Conduct

Contributing Docs

• I agree to follow this project's Contribution Docs

[takanome-dev]

cc @shamimbinnur

We can take on this PR after connecting all remaining copies to sanity.

Is this done?

[shamimbinnur]

@takanome-dev Not all the copies are connected to Sanity yet.