Fix macOS build

Author: edolstra

precompiled-headers.h

@@ -43,23 +43,13 @@
 #include <errno.h>
 #include <fcntl.h>
 #include <grp.h>
-#include <net/if.h>
 #include <netdb.h>
-#include <netinet/ip.h>
 #include <pwd.h>
-#include <sched.h>
 #include <signal.h>
-#include <sys/ioctl.h>
-#include <sys/mman.h>
-#include <sys/mount.h>
-#include <sys/param.h>
-#include <sys/personality.h>
 #include <sys/resource.h>
 #include <sys/select.h>
 #include <sys/socket.h>
-#include <sys/socket.h>
 #include <sys/stat.h>
-#include <sys/syscall.h>
 #include <sys/time.h>
 #include <sys/types.h>
 #include <sys/utsname.h>