This functionnality has never been used.

Revert "Queue notifications are now enabled"
This reverts commit 58953a31.

Revert "notifications are not propagated to parents fixed"
This reverts commit 41eba17a.

Revert "add notifier to `all` and `any`"
This reverts commit 34a4233b.

Revert "Add Promise progress"
This reverts commit a79070b4.