staging: olpc_dcon: Remove TODO item

All uses of old GPIO API have been converted to new API.
This item can be removed from TODO file.
Signed-off-by: Jerry Lin <wahahab11@gmail.com>
Link: https://lore.kernel.org/r/20190729023544.GA25930@compute1Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/staging/olpc_dcon/TODO

@@ -8,10 +8,6 @@ TODO:
 	  internals, but isn't properly integrated, is not the correct solution.
 	- see if vx855 gpio API can be made similar enough to cs5535 so we can
 	  share more code
-	- convert all uses of the old GPIO API from <linux/gpio.h> to the
-	  GPIO descriptor API in <linux/gpio/consumer.h> and look up GPIO
-	  lines from device tree, ACPI or board files, board files should
-	  use <linux/gpio/machine.h>
 	- allow simultaneous XO-1 and XO-1.5 support
 
 Please send patches to Greg Kroah-Hartman <greg@kroah.com> and