Deleting an Object Type
To delete an object type (extension) or base config
In the navigation pane, click Modules .
Navigate to the module that contains the object type (extension) or base config that you want to delete and click on it. The Overview tab is displayed in the details pane, showing the content of the object type (extension) or base config.
Remove the object type (extension) or base config from the configuration in the editor.
Click . The structure of the navigation tree is updated.
After deleting the object type (extension) or base config, you still need to commit the model for the changes to take effect.