5 orphaned field_config_instances in the database after uninstalling:

I installed commerce_product_bundles module for D7, and found that it leaves 5 orphaned field_config_instances in the database after uninstalling:

commerce_unit_price, commerce_total, commerce_product, commerce_display_path, commerce_parent_line_item

I think these are left because the module lacks a proper uninstall script/hook, but I am not sure about that. The instances are all of the commerce_line_item entity type, and the bundles are of the bundle type, so they seem to be distinct from the other commerce config instances with similar names.

I found these from Notices in the log when visiting admin/reports/fields, as there are the following 2 notices for each of the 5 instances:

Notice: Undefined index: bundle in field_ui_fields_list() (line 35 of /*/*/*/code/modules/field_ui/field_ui.admin.inc).

Notice: Undefined index: bundle in _field_ui_bundle_admin_path() (line 335 of /*/*/*/code/modules/field_ui/field_ui.module).

Reinstalling the module removes the notices.

I have deleted these field_config_instances locally in my dev environment to test, and haven't noticed anything adverse, but that doesn't give me enough piece of mind to delete them permanently. Is there a way to verify that these instances are not affecting other data?

I also reinstalled and looked for fields that would relate to those instances and found none.

Maybe a patch should be written to safely remove those instances upon uninstalling the module.