CODE EXAMPLE FOR JAVASCRIPT

remove selected bar mui tabs

return(
  <Tabs
    value={tabPosition}
    onChange={handleTabChange}
    TabIndicatorProps={{   <--- here
      style: {
          display: "none",
      },
    }} <--  to here
  >
    <Tab
      label={"File"}
      {...a11yProps(0)}
    />
    <Tab
      label={"New"}
      {...a11yProps(1)}
    />
  </Tabs>
);