reworked deferred pool and now it's used instead of makeDeferredsQ(..)...

Signed-off-by: Alex A. Naanou <alex.nanou@gmail.com>
removed makeDeferredsQ(..) as it's no longer used and is fully replaces by makeDeferredPool(..)...

Signed-off-by: Alex A. Naanou <alex.nanou@gmail.com>