Currently, if and when an administrator unticks an application from the 'ConfigMgr Apps' tab in the Publishing console to cease creating/updating an application object, previously built applications are not deleted from SCCM and the sources are left in storage.
I'd like to suggest an option in the right-click context of applications to remove all previously generated application objects of a specific app. My use case is targeted for apps that we no longer need in our environment, but I could see people wanting to reset all objects tied to an app while still syncing that app (i.e. remove everything and start anew with fresh objects).
Cf. https://patchmypc.com/forum/index.php?topic=6963.0 for steps to replicate
As reported by Hugo Marinho in the forum (cf. https://patchmypc.com/forum/index.php?msg=16971) the feature already exists. This idea can be closed.