Error only assignment, call, increment, decrement, and new object expression can be used as a statement

I have this list:

List<Utilizadores> LU = new List<Utilizadores>();

and when i try to do this:

for (int i = 0; i < LU.Count(); i++)
{
    if (LU[i].getUsername() == username)
    {
        LU.Remove[i];
        return true;
    }
}

it gives me this error:

"Only assignment, call, increment, decrement, and new object expression can be used as a statement"

What can it be?