Fix spec violations in repository/components/table/index_spec.js

What does this MR do and why?

Removes setData() in spec/frontend/repository/components/table/index_spec.js

Screenshots or screen recordings

No ui changes

Before	After

How to set up and validate locally

1. Checkout this branch git checkout 391011-spec-violations-repository-tree
2. Run yarn jest spec/frontend/repository/components/table/index_spec.js in terminal

MR acceptance checklist

This checklist encourages us to confirm any changes have been analyzed to reduce risks in quality, performance, reliability, security, and maintainability.

• I have evaluated the MR acceptance checklist for this MR.

Related to #391011 (closed)