While revisions can be disabled or limited in number with settings in the wp-config file, there is no way to allow for the deletion of revisions over a certain ago. That is what this plugin allows you to do.
In the options you can set the number of months after which revisions are to be deleted. They can then be deleted at the click of a button or via a cron job running on a daily schedule.
The options also allow you to select the post types (both standard and custom) which can have revisions removed.
Download Remove Revisions v1.0.0
If you have any problems to log or features to request, contact me via the Plugin Support Forum
I’m keen to resolve any issues and happy to consider functionality requests, so please get in touch if you want to report a problem or ask for new functionality.