Removes column hard_deadline from call for papers

db/migrate/20140604142949_remove_hard_deadline_from_call_for_papers.rb

@@ -0,0 +1,9 @@
+class RemoveHardDeadlineFromCallForPapers < ActiveRecord::Migration
+  def up
+    remove_column :call_for_papers, :hard_deadline
+  end
+
+  def down
+    add_column :call_for_papers, :hard_deadline, :date
+  end
+end