Remove deprecation at ActionController::BadRequest

actionpack/CHANGELOG.md

+*   Remove deprecated support to passing original exception to `ActionController::BadRequest`
+    and the `ActionController::BadRequest#original_exception` method.
+
+    *Rafael Mendonça França*
+
 *   Remove deprecated methods `skip_action_callback`, `skip_filter`, `before_filter`,
     `prepend_before_filter`, `skip_before_filter`, `append_before_filter`, `around_filter`
     `prepend_around_filter`, `skip_around_filter`, `append_around_filter`, `after_filter`,

actionpack/lib/action_controller/metal/exceptions.rb

@@ -3,20 +3,10 @@ class ActionControllerError < StandardError #:nodoc:
   end
 
   class BadRequest < ActionControllerError #:nodoc:
-    def initialize(msg = nil, e = nil)
-      if e
-        ActiveSupport::Deprecation.warn("Passing #original_exception is deprecated and has no effect. " \
-                                        "Exceptions will automatically capture the original exception.", caller)
-      end
-
+    def initialize(msg = nil)
       super(msg)
       set_backtrace $!.backtrace if $!
     end
-
-    def original_exception
-      ActiveSupport::Deprecation.warn("#original_exception is deprecated. Use #cause instead.", caller)
-      cause
-    end
   end
 
   class RenderError < ActionControllerError #:nodoc: