chore: disable eslint rules jest/no-mocks-import for test file

[stanleyyconsensys]

Explanation

This PR is to disable the jest/no-mocks-import for the test file

and remove the corresponding inline eslint-disable rule

References

Checklist

• I've updated the test suite for new or updated code as appropriate
• I've updated documentation (JSDoc, Markdown, etc.) for new or updated code as appropriate
• I've communicated my changes to consumers by updating changelogs for packages I've changed
• I've introduced breaking changes in this PR and have prepared draft pull requests for clients and consumer packages to resolve them