Revert "Merge pull request #12480 from iwiznia/master"

This reverts commit e5f5a838b96a362534d9bb60d02334439ed9784c, reversing
changes made to d7567f3290a50952494e9213556a1f283a6cf3a0.

1 files changed, 0 insertions, 20 deletions

diff --git a/activesupport/lib/active_support/duration.rb b/activesupport/lib/active_support/duration.rb
index 1db0ca51ae..87b6407038 100644
--- a/activesupport/lib/active_support/duration.rb
+++ b/activesupport/lib/active_support/duration.rb
@@ -81,18 +81,6 @@ module ActiveSupport
       to_i
     end
 
-    # Flattens all the +parts+ of the duration, and returns a
-    # new duration object.
-    def flatten
-      Duration.new(@value, flatten_parts)
-    end
-
-    # Flattens all the +parts+ of this duration.
-    def flatten!
-      @parts = flatten_parts
-      self
-    end
-
     protected
 
       def sum(sign, time = ::Time.current) #:nodoc:
@@ -109,14 +97,6 @@ module ActiveSupport
         end
       end
 
-      def flatten_parts
-        @parts.inject({}) do |result, (name, value)|
-          result[name] ||= 0
-          result[name] += value
-          result
-        end.to_a
-      end
-
     private
 
       def method_missing(method, *args, &block) #:nodoc: