[Perl/perl5] 27effc: op/require_errors.t - fixup

[Yves Orton via perl5-changes]

  Branch: refs/heads/yves/robust_inc_unsquash
  Home:   https://github.com/Perl/perl5
  Commit: 27effc93766d0ccd87e72a2a81424a66a3f18d9b
      
https://github.com/Perl/perl5/commit/27effc93766d0ccd87e72a2a81424a66a3f18d9b
  Author: Yves Orton <demer...@gmail.com>
  Date:   2022-11-26 (Sat, 26 Nov 2022)

  Changed paths:
    M t/op/require_errors.t

  Log Message:
  -----------
  op/require_errors.t - fixup

make sure we dont have dupe entries in @INC