Remove hack to support BigDecimal in Ruby 1.9

Now that Rails requires Ruby >= 2.0, there is no need to check whether
`BigDecimal` exists or not.

1 files changed, 2 insertions, 11 deletions

diff --git a/activesupport/lib/active_support/core_ext/object/duplicable.rb b/activesupport/lib/active_support/core_ext/object/duplicable.rb
index 665cb0f96d..78b0536491 100644
--- a/activesupport/lib/active_support/core_ext/object/duplicable.rb
+++ b/activesupport/lib/active_support/core_ext/object/duplicable.rb
@@ -78,17 +78,8 @@ end
 
 require 'bigdecimal'
 class BigDecimal
-  # Needed to support Ruby 1.9.x, as it doesn't allow dup on BigDecimal, instead
-  # raises TypeError exception. Checking here on the runtime whether BigDecimal
-  # will allow dup or not.
-  begin
-    BigDecimal.new('4.56').dup
-
-    def duplicable?
-      true
-    end
-  rescue TypeError
-    # can't dup, so use superclass implementation
+  def duplicable?
+    true
   end
 end