xfs: remove xfs_dqrele_all_inodes

mainline-inclusion
from mainline-v5.14-rc4
commit 777eb1fa
category: bugfix
bugzilla: https://gitee.com/openeuler/kernel/issues/I4KIAO
CVE: NA

Reference: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=777eb1fa857ec38afd518b3adc25cfac0f4af13b



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xfs_dqrele_all_inodes is unused now, remove it and all supporting code.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Darrick J. Wong <djwong@kernel.org>
Signed-off-by: Darrick J. Wong <djwong@kernel.org>
Reviewed-by: Zhang Yi <yi.zhang@huawei.com>
Signed-off-by: Zheng Zengkai <zhengzengkai@huawei.com>