btrfs-progs: drop dependency on acl and attr

btrfs-progs does not depend on libacl since version v4.0.1:

  ab5984f btrfs-progs: convert: drop dependency on sys/acl.h
  https://git.kernel.org/cgit/linux/kernel/git/kdave/btrfs-progs.git/commit/?id=ab5984ff6cce6f12063720b6dafc1afcd6606853

Moreover, btrfs-progs does not depend on attr since version v3.14:

  b5fe148 btrfs-progs: include <sys/xattr.h> instead of <attr/xattr.h>
  https://git.kernel.org/cgit/linux/kernel/git/kdave/btrfs-progs.git/commit/?id=b5fe148715ea295e2b951ec6c90409b9d81978d8

Signed-off-by: Christophe Vu-Brugier <cvubrugier@fastmail.fm>
Acked-by: Gustavo Zacarias <gustavo@zacarias.com.ar>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>

package/btrfs-progs/Config.in

@@ -3,8 +3,6 @@ config BR2_PACKAGE_BTRFS_PROGS
 	depends on BR2_USE_WCHAR # util-linux
 	depends on BR2_USE_MMU # util-linux
 	depends on BR2_TOOLCHAIN_HAS_THREADS
-	select BR2_PACKAGE_ACL
-	select BR2_PACKAGE_ATTR
 	select BR2_PACKAGE_E2FSPROGS
 	select BR2_PACKAGE_LZO
 	select BR2_PACKAGE_UTIL_LINUX

package/btrfs-progs/btrfs-progs.mk

@@ -7,7 +7,7 @@
 BTRFS_PROGS_VERSION = 4.1
 BTRFS_PROGS_SITE = $(BR2_KERNEL_MIRROR)/linux/kernel/people/kdave/btrfs-progs
 BTRFS_PROGS_SOURCE = btrfs-progs-v$(BTRFS_PROGS_VERSION).tar.xz
-BTRFS_PROGS_DEPENDENCIES = host-pkgconf acl attr e2fsprogs lzo util-linux zlib
+BTRFS_PROGS_DEPENDENCIES = host-pkgconf e2fsprogs lzo util-linux zlib
 BTRFS_PROGS_CONF_OPTS = --disable-backtrace
 BTRFS_PROGS_LICENSE = GPLv2
 BTRFS_PROGS_LICENSE_FILES = COPYING