Remove unwanted cop file

rubocop/cop/usage_data/prevent_boilerplate_comments_in_yaml.rb

-# frozen_string_literal: true
-
-module RuboCop
-  module Cop
-    # Checks for comments in the mtric yaml files.
-    # See https://gitlab.com/gitlab-org/gitlab/-/issues/324038
-    class PreventBoilerplateCommentsInYaml < RuboCop::Cop::Cop
-      MSG = 'Remove the boilerplate comments from the top of the file.'
-    end
-  end
-end