atk: Version bump to 2.9.3

Remove atk-glib-fix.patch which has been applied upstream.
https://bugzilla.gnome.org/show_bug.cgi?id=652205
https://git.gnome.org/browse/atk/commit/?id=2b6504ef3a8eb22b4d00c933e041fe2e1423142a



Signed-off-by: Markos Chandras <markos.chandras@imgtec.com>
Signed-off-by: Peter Korsgaard <jacmet@sunsite.dk>