[parrot/parrot] d3b0e4: Remove notifications to perl6-specific lists.

[GitHub]

  Branch: refs/heads/master
  Home:   https://github.com/parrot/parrot
  Commit: d3b0e4c5b9473cde014c852c1f9c2eb6dbd14759
      https://github.com/parrot/parrot/commit/d3b0e4c5b9473cde014c852c1f9c2eb6dbd14759
  Author: Will "Coke" Coleda <will at coleda.com>
  Date:   2015-05-20 (Wed, 20 May 2015)

  Changed paths:
    M docs/project/release_manager_guide.pod

  Log Message:
  -----------
  Remove notifications to perl6-specific lists.

Even the rakudo compiler releases don't use -announce.
This probably dates from when rakudo was still in the nest.