staging: panel: Remove outdated TODO task

Remove Lindent task from TODO file as it's obsolete.
Signed-off-by: NMariusz Gorski <marius.gorski@gmail.com>
Signed-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/staging/panel/TODO

 TODO:
 	- checkpatch.pl cleanups
-	- Lindent
 	- review major/minor usages
 	- review userspace api
 	- see if all of this could be easier done in userspace instead.