kobject: remove incorrect comment in kobject_rename

As pointed out by Kay.

Cc: Kay Sievers <kay.sievers@vrfy.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

diff --git a/lib/kobject.c b/lib/kobject.c
index 3590f02..9500339 100644
--- a/lib/kobject.c
+++ b/lib/kobject.c
@@ -334,8 +334,6 @@
 	sprintf(devpath_string, "DEVPATH_OLD=%s", devpath);
 	envp[0] = devpath_string;
 	envp[1] = NULL;
-	/* Note : if we want to send the new name alone, not the full path,
-	 * we could probably use kobject_name(kobj); */
 
 	error = sysfs_rename_dir(kobj, new_name);