Remove duplicate rubocop definition and add TODO checkpoint for rubocop fixes

Author: luke-hill

ruby/.rubocop_todo.yml

@@ -6,6 +6,8 @@
 # Note that changes in the inspected code, or installation of new
 # versions of RuboCop, may require this file to be generated again.
 
+# TODO: Oct '23 -> 10 files inspected, 63 offenses detected, 53 offenses autocorrectable
+
 # Offense count: 1
 # This cop supports safe autocorrection (--autocorrect).
 # Configuration parameters: Severity, Include.

ruby/Gemfile

@@ -1,6 +1,5 @@
 # frozen_string_literal: true
-source "https://rubygems.org"
 
-gem 'rubocop'
+source "https://rubygems.org"
 
 gemspec