Merge pull request #21991 from philr/doc_tzinfo_no_longer_bundled

Remove outdated documentation regarding a bundled version of TZInfo

activesupport/lib/active_support/values/time_zone.rb

@@ -26,12 +26,6 @@ module ActiveSupport
   #   Time.zone      # => #<ActiveSupport::TimeZone:0x514834...>
   #   Time.zone.name # => "Eastern Time (US & Canada)"
   #   Time.zone.now  # => Sun, 18 May 2008 14:30:44 EDT -04:00
-  #
-  # The version of TZInfo bundled with Active Support only includes the
-  # definitions necessary to support the zones defined by the TimeZone class.
-  # If you need to use zones that aren't defined by TimeZone, you'll need to
-  # install the TZInfo gem (if a recent version of the gem is installed locally,
-  # this will be used instead of the bundled version.)
   class TimeZone
     # Keys are Rails TimeZone names, values are TZInfo identifiers.
     MAPPING = {