Change record status: 
Project: 
Introduced in branch: 
7.x-1.x
Introduced in version: 
7.x-1.0-rc1
Description: 

Modules providing a fieldable entity must call field_attach_delete_bundle() for all bundles in hook_uninstall().

As example, have a look at the provided test module, i.e. entity_test_uninstall().

Impacts: 
Module developers