Revert "DEV: add routes_lazy_route to boost boot-up time (#14545)" (PR #14581)

This reverts commit f5cf647e579d6a2c844a38d695877e5aad951184.

The gem breaks usage of Rails URL helpers when used outside views and controllers, for example in discourse/upload.rb at 88ecb83382e4dc5cec1d9599619a6c40a07825ae · discourse/discourse · GitHub. the upload_short_path method call fails with an undefined method exception when this gem is enabled.

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