sysfs: introduce [__]sysfs_remove()

Given a sysfs_dirent, there is no reason to have multiple versions of
removal functions.  A function which removes the specified
sysfs_dirent and its descendants is enough.

This patch intorduces [__}sysfs_remove() which replaces all internal
variations of removal functions.  This will be the only removal
function in the planned new sysfs_dirent based interface.

Signed-off-by: Tejun Heo <tj@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
diff --git a/fs/sysfs/inode.c b/fs/sysfs/inode.c
index 364c887..63f755e 100644
--- a/fs/sysfs/inode.c
+++ b/fs/sysfs/inode.c
@@ -330,7 +330,7 @@
 
 	sd = sysfs_find_dirent(dir_sd, name, ns);
 	if (sd)
-		sysfs_remove_one(&acxt, sd);
+		__sysfs_remove(&acxt, sd);
 
 	sysfs_addrm_finish(&acxt);