Revert "log at debug level what line caused the redirect_to"

This reverts commit 3fa00070047b5d019d39e691598ee2890283d052.

Reason: This message is usually not accurate and annoying:

    Redirected by ~/.rbenv/versions/1.9.3-p327-perf/lib/ruby/1.9.1/logger.rb:371:in `add'`