fix: remove unused React imports (#125)

[Ankit-kumar17]

Summary

• The issue identified unused \React\ imports across several files. This PR cleans up these unused imports since modern JSX transforms in Docusaurus 2+ do not require \import React from 'react';\ in scope.
• Kept explicit React imports where hooks or other React features are actually used (e.g. \useEffect, \useState, \React.cloneElement, etc).
• Reduces noise in components.

Testing

• Ran
  pm install\ and
  pm run build\ successfully to ensure no build breakage.

Fixes #125