fix(release): Fix release-plz dirty-tree errors from Ruby binstubs (#547)

Ruby binstubs were checked in, but ignore via .gitignore **bin pattern.
This causes release-plz to think that the source tree is dirty.

The binstubs are deleted from source repo since they are always regenerated by bundler.
Also simplizy release-plz to focus only on the core crate.

Signed-off-by: Anand Krishnamoorthi <anakrish@microsoft.com>

bindings/ruby/bin/console

@@ -1,11 +0,0 @@
-#!/usr/bin/env ruby
-# frozen_string_literal: true
-
-require "bundler/setup"
-require "regorus"
-
-# You can add fixtures and/or initialization code here to make experimenting
-# with your gem easier. You can also use a different console, if you like.
-
-require "irb"
-IRB.start(__FILE__)

bindings/ruby/bin/setup

@@ -1,8 +0,0 @@
-#!/usr/bin/env bash
-set -euo pipefail
-IFS=$'\n\t'
-set -vx
-
-bundle install
-
-# Do any other automated setup that you need to do here