Removing "Bundle Contents" from a bundle removes the GUI from the item's lore, however after a short amount of time, the GUI returns (the component itself).

Steps:

1. Make a world with bundles and commands enabled
2. Download the datapack with the item modifier that removes bundle_contents and add it to your world (don't forget to reload the world)
3. Run the following command with bundle in hand

   /item modify entity @s weapon.mainhand test:empty_bundle

   (State: component is removed)

4. Right click with the bundle(State: component is back)

 {
    "function": "set_components",
    "components": {
        "!minecraft:bundle_contents": {}
    }
}