Removed unnecessary call to value.save

removing this call fixed the plugin's ability to update reports.
This functionality must of been removed in redmine 1.4.x

closes #24

app/helpers/exceptionhandler_helper.rb

@@ -133,7 +133,6 @@ module ExceptionhandlerHelper
         when "Count"
           value.value = (value.value.to_i + 1).to_s
       end
-      value.save
     end
     issue.init_journal(User.anonymous, "Issue updated")
     return issue.save