DEVELOPERS: Remove adam.duskett@amarulasolutions from sway packages

Patches submitted to update these packages have gone ignored for
months without comment, and I no longer wish to recieve daily
emails about them being out of date.

Signed-off-by: Adam Duskett <adam.duskett@amarulasolutions.com>
Signed-off-by: Julien Olivain <ju.o@free.fr>