DEVELOPERS: remove package/sepolgen/

The directory package/sepolgen/ was removed in commit 9d6da7a26
(policycoreutils: split packages and bump to 2.7), but two
entries were left in the DEVELOPERS file.

This causes the following warnings when running util/get-developers:
WARNING: 'package/sepolgen/' doesn't match any file
WARNING: 'package/sepolgen/' doesn't match any file

Remove the erroneous entries.

Signed-off-by: Cam Hutchison <camh@xdna.net>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>

DEVELOPERS

@@ -409,7 +409,6 @@ F:	package/libselinux/
 F:	package/libsemanage/
 F:	package/libsepol/
 F:	package/policycoreutils/
-F:	package/sepolgen/
 F:	package/ustr/
 
 N:	Corentin Guillevic <corentin.guillevic@smile.fr>
@@ -1036,7 +1035,6 @@ F:	package/python-posix-ipc/
 F:	package/python-pypcap/
 F:	package/python-pyrex/
 F:	package/raptor/
-F:	package/sepolgen/
 F:	package/setools/
 F:	package/smcroute/
 F:	package/tclap/