unfeaturize

This module will help you get your content types out of features, and back into the database in a state where you can edit or delete them freely.

How to use:
1) Disable the feature (module) that owns your content type
2) Enable this module
(make sure you have permission to administer content types)
3) Visit admin/config/development/unfeaturize
4) check the boxes for the content types you'd like back
5) click the "Unfeaturize" button.
6) Profit.