xfs: remove xfs_setattr_time() declaration

xfs_setattr_time() has been removed since
commit e014f37d ("xfs: use setattr_copy to set vfs inode
attributes"), so remove it.
Signed-off-by: NGaosheng Cui <cuigaosheng1@huawei.com>
Reviewed-by: NCarlos Maiolino <cmaiolino@redhat.com>
Signed-off-by: NDave Chinner <david@fromorbit.com>

fs/xfs/xfs_iops.h

@@ -13,7 +13,6 @@ extern const struct file_operations xfs_dir_file_operations;
 
 extern ssize_t xfs_vn_listxattr(struct dentry *, char *data, size_t size);
 
-extern void xfs_setattr_time(struct xfs_inode *ip, struct iattr *iattr);
 int xfs_vn_setattr_size(struct user_namespace *mnt_userns,
 		struct dentry *dentry, struct iattr *vap);