Removing old variables using Nunjucks tag

[bibhu107]

What is the purpose of this pull request?

• Documentation update
• Bug fix
• Feature addition or enhancement
• Code maintenance
• DevOps
• Improve developer experience
• Others, please explain:

Overview of changes:
Removed using Variables keyword started using Nunjucks tag. Taken reference from #1407

Anything you'd like to highlight/discuss:

Testing instructions:

Proposed commit message: (wrap lines at 72 characters)
Removing old variables using Nunjucks tag

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Checklist: ☑️

• Updated the documentation for feature additions and enhancements
• Added tests for bug fixes or features
• Linked all related issues
• No unrelated changes

[tlylt]

Thanks @bibhu107 for the work thus far, will get back on this PR once I have discussed the details with the dev team.

[tlylt]

Hi @bibhu107, sorry for the delay and thank you for your contribution once again. This PR is not necessary as there is no need to change how a variable is declared within the _markbind/variables.md file. The root cause of the original issue is more complicated (to understand) and hence I will be closing this PR and tackling it myself.

Thank you once again and feel free to explore other issues if you are keen.