Remove Menu Bar from Heading
This could be as simple as checking a box to disable it, or as complicated as making a child theme and writing custom code.
But we can never know… because your theme “Greenfarm” is a commercial one and we don’t have access to the code of any commercial product here at WordPress.org.
I’ll advise you contact the developer or the marketplace where you purchased the theme from for assistance with this. Please see: https://themeforest.net/item/greenfarm-organic-theme-for-woocommerce-wordpress/22591068/support
Good luck!