Deparse.t: Delete a test

It was identical to one 3 tests earlier.
Deparse foreach state $x

B::Deparse was emitting ‘foreach my’ instead of ‘foreach state’.

This example prints 1:

use feature ':all'; no warnings experimental;
sub f {
  my sub foo;
  foo(), return if @_;
  for state $x (1) {
    f(1);
    sub foo { print $x, "\n" }
  }
}
f()

If you change ‘state’ to ‘my’, it prints nothing.

So there is a difference between ‘for my’ and ‘for state’.  (At first
I thought there might not be.)
Mollify concise-xs.t