Drop DirectFB

This package is not very useful on its own and nobody
seems to pull this as dependency any more.

Signed-off-by: Michael Tremer <michael.tremer@ipfire.org>
Signed-off-by: Arne Fitzenreiter <arne_f@ipfire.org>

src/patches/DirectFB-1.7.7-fix_mknod.patch

@@ -1,22 +0,0 @@
-From: Debian Multimedia Maintainers
- <pkg-multimedia-maintainers@lists.alioth.debian.org>
-Date: Thu, 16 Mar 2017 20:48:20 +0100
-Subject: _fix_mknod
-
----
- gfxdrivers/davinci/davinci_c64x.c | 2 ++
- 1 file changed, 2 insertions(+)
-
-diff --git a/gfxdrivers/davinci/davinci_c64x.c b/gfxdrivers/davinci/davinci_c64x.c
-index 431ffdd..420b567 100644
---- a/gfxdrivers/davinci/davinci_c64x.c
-+++ b/gfxdrivers/davinci/davinci_c64x.c
-@@ -37,6 +37,8 @@
- #include <sys/ioctl.h>
- #include <sys/mman.h>
- #include <sys/types.h>
-+#include <sys/stat.h>
-+#include <sys/sysmacros.h>
- #include <unistd.h>
- 
- #include <directfb_util.h>