How can I eliminate the border at the bottom of the Flutter TabBar?

edit

To eliminate the border at the bottom of the Flutter TabBar, you can set the TabBar's border property to Border(bottom: BorderSide.none) like this:

TabBar(
  tabs: [
    Tab(text: 'Tab 1'),
    Tab(text: 'Tab 2'),
  ],
  border: Border(bottom: BorderSide.none),
),

This sets the bottom border to none, effectively removing it.