package/stress-ng: bump to version 0.09.39

- package/stress-ng: bump to version 0.09.39

- remove patch, which was merged upstream in commit
  http://kernel.ubuntu.com/git/cking/stress-ng.git/commit/stress-netlink-proc.c?id=cbfc5a9d648ae639e3aebf2354eac5b3c015c0fb



Signed-off-by: Florian La Roche <F.LaRoche@pilz.de>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@bootlin.com>