I have an old template real estate website that has been active since 2004, it has slipped a bit but still ranks on page one of Google. Probably about 10 pages out of 80 have any traffic. There are at least 10 pages that have boilerplate content that I never deleted in the beginning and then was afraid to delete once I did well on Google.
I am currently working on a move to a Wordpress site, copying content over and tidying up as much as I can as I go. It's embarrassing to see all the stuff I should have gotten rid of years ago. I would like to delete these 10 or so pages. They are indexed by Google but get no traffic. For example there are a couple of pages that have no content except for an iframe going to an old parade of homes website and one that frames an energy saver page from the department of energy. I'm worried about what Google will do if I just delete these pages and how I can clean out these low quality pages and minimize any effect on my organic rankings.
Any advise would be appreciated.