It's bit easy to remove demos from theme

Suppose if you don't want other demos except demo which you like then just follow below steps:

• Delete the folders of the layouts you do not need from src/components/home/ (e.g., if you only want mega-mart, you can safely delete the electro, baby-shop, etc. folders).
• Open src/components/home/index.tsx and remove the import statements for the themes you just deleted.
• In the same file (src/components/home/index.tsx), remove the references to those deleted themes from the themeComponents object.
• You can also safely remove any extra pages or mock JSON data (in public/assets/data/home) related to the removed themes.