Fix documentation for String#mb_chars.

This documentation has been out of date.

1 files changed, 1 insertions, 4 deletions

diff --git a/activesupport/lib/active_support/core_ext/string/multibyte.rb b/activesupport/lib/active_support/core_ext/string/multibyte.rb
index 4e7824ad74..0ea5fe3571 100644
--- a/activesupport/lib/active_support/core_ext/string/multibyte.rb
+++ b/activesupport/lib/active_support/core_ext/string/multibyte.rb
@@ -6,7 +6,7 @@ class String
   #
   # +mb_chars+ is a multibyte safe proxy for string methods.
   #
-  # In Ruby 1.8 and older it creates and returns an instance of the ActiveSupport::Multibyte::Chars class which
+  # It creates and returns an instance of the ActiveSupport::Multibyte::Chars class which
   # encapsulates the original string. A Unicode safe version of all the String methods are defined on this proxy
   # class. If the proxy class doesn't respond to a certain method, it's forwarded to the encapsulated string.
   #
@@ -17,9 +17,6 @@ class String
   #   name.mb_chars.reverse.to_s # => "rellüM sualC"
   #   name.mb_chars.length       # => 12
   #
-  # In Ruby 1.9 and newer +mb_chars+ returns +self+ because String is (mostly) encoding aware. This means that
-  # it becomes easy to run one version of your code on multiple Ruby versions.
-  #
   # == Method chaining
   #
   # All the methods on the Chars proxy which normally return a string will return a Chars object. This allows