tree-wide: drop unnecessary inclusion of sys/quota.h

As it is included by quota-util.h anyway.

src/home/homed-home.c

@@ -1,7 +1,6 @@
 /* SPDX-License-Identifier: LGPL-2.1-or-later */
 
 #include <sys/mman.h>
-#include <sys/quota.h>
 #include <sys/vfs.h>
 
 #include "sd-bus.h"

src/home/homed-manager.c

@@ -8,7 +8,6 @@
 #include <pwd.h>
 #include <sys/inotify.h>
 #include <sys/ioctl.h>
-#include <sys/quota.h>
 #include <sys/stat.h>
 
 #include "sd-bus.h"

src/home/homework-quota.c

@@ -1,5 +1,4 @@
 /* SPDX-License-Identifier: LGPL-2.1-or-later */
-#include <sys/quota.h>
 
 #include "btrfs-util.h"
 #include "errno-util.h"