Examine source code of how do i delete this

{
  "name": "test",
  "manifest_version": 2,
  "version": "1.0",
  "theme": {
    "images": {
      "theme_frame": "Untitled106_20250704175253.PNG"
    },
    "colors": {
      "frame": "rgba(229, 230, 232, 1)",
      "tab_background_text": "rgba(0, 0, 0, 1)"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{940e283d-767b-443b-a25c-9d45bf7e7354}"
    }
  }
}