On the page admin/config/search/metatags_quick i've checked the field abstract,keywords and description to be enabled. When I tried to uninstall this module it said that there were field that need to be deleted first. There is no option to disable a field like keywords when you have enabled it.
Comments
Comment #1
valthebaldDeletion of fields data is a dangerous operation, which can be done through the Fields UI
Adding of meta fields is intentionally a "one-way" operation.
Comment #2
holyfire commented@valthebald, deleting data with a warning should not be a problem, being unable to uninstall a module in my opinion however is a bigger and more critical issue. It violates a base level understanding with a Drupal end user. A module which cannot be uninstalled needs to be at a bare minimum have this indicated clearly in the project documentation (not just the issue queue). In addition I'd recommend that the module's project be sandboxed until this issue is resolved.