The wordpress database is still holding some data (post content, image urls etc) in it’s database.
You need to go into your database and change the url references to the non-ssl as well. I suggest NOT doing this through phpmyadmin though as it will cause some problems.
Go get this tool: https://interconnectit.com/products/search-and-replace-for-wordpress-databases/
Upload the contents of the zipped file into a new directory in your www/ folder. (I usually rename the search and replace folder to SRDB.)
Now navigate to your site with the SRDB at the end. (www.example.com/SRDB)and the top two lines you’ll see a search field and a replace field. (if you get a db connection error here, double check the wp-config to ensure that it has the right credentials).
In the search place your old site address with ssl: https://www.example.com
in the replace field place your new url without ssl http://www.example.com/
hit live live run.
ONLY do this after ensuring you’re on your new url and that it’s loaded into your new database AND you’ve backed up your db just in case.
This should fix your problems!