Revert "Prevent the following compile-time error due to a missing system"

This reverts commit 6539a6f0.

Already fixed in:

commit 82f8cf89
Author: Manoj Gupta
Date:   Tue Nov 13 11:35:25 2018 -0800
config/udev: Include header <sys/sysmacros.h> to use major/minor
3 jobs for master
Status Name Job ID Coverage
  Docker Image
canceled debian-testing #550716

 
  Build And Test
canceled autotools-build-and-test #550717

canceled meson-build-and-test #550718