DEVELOPERS: Remove adam.duskett@amarulasolutions non-flutter related packages

I will only be supporting Flutter and other packages needed by Amarula Solution
in a professional related capacity from now on.

Signed-off-by: Adam Duskett <adam.duskett@amarulasolutions.com>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@bootlin.com>

DEVELOPERS

@@ -36,10 +36,7 @@ F:	package/flutter-gallery/
 F:	package/flutter-pi/
 F:	package/flutter-sdk-bin/
 F:	package/libutempter/
-F:	package/python-kmod/
-F:	package/python-versioneer/
 F:	package/tllist/
-F:	support/testing/tests/package/test_firewalld.py
 F:	support/testing/tests/package/test_flutter.py
 
 N:	Adam Heinrich <adam@adamh.cz>