jfs: remove redundant dquot_initialize() in jfs_evict_inode()

We don't need to call dquot_initialize() twice in jfs_evict_inode(),
remove one of them for cleanup.

Signed-off-by: Chao Yu <yuchao0@huawei.com>
Signed-off-by: Dave Kleikamp <dave.kleikamp@oracle.com>