chore: fix JavaScript lint errors (issue #7553)

[siddhesh434]

Resolves #7553.

Description

What is the purpose of this pull request?

This pull request:

• Fixes a JavaScript lint error where TransformStream was being reported as "already defined" by removing re-declaration

Related Issues

Does this pull request have any related issues?

This pull request:

• resolves Fix JavaScript lint errors #7553

Questions

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No.

Other

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No.

Checklist

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• Read, understood, and followed the contributing guidelines.

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Coverage Report

Package	Statements	Branches	Functions	Lines
bench/harness	$\color{green}513/513$ $\color{green}+100.00\%$	$\color{green}60/60$ $\color{green}+100.00\%$	$\color{green}9/9$ $\color{green}+100.00\%$	$\color{green}513/513$ $\color{green}+100.00\%$

The above coverage report was generated for the changes in this PR.