chore: Turn off no-unused-vars rule

[awoloszyn22]

Description

Changes proposed in this pull request:

• Turned off no-unused-vars rule as it doesn't support TypeScript code and the rule @typescript-eslint/no-unused-vars which is a better option to monitor unused variables is already enabled.

https://stackoverflow.com/questions/57802057/eslint-configuring-no-unused-vars-for-typescript/61555310#61555310

Related issue(s)
#4396

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