Why isn't all the code after a return statement removed?

[nbro]

Let's say we have this function

def my_func(x):
    a = 0
    return x  # Code after this is dead code!
    return x

Then your tool (i.e. by calling fix_code) does not remove the second return x, but produces

def my_func(x):
    return x  # Code after this is dead code!
    return x

In general, all the code after the last return statement that we know will be executed is not executed, so it's dead code that can be removed. So, why doesn't your tool handle these cases?