drivers: Remove TODO from io_storage

This TODO was added five years ago so I assume that there is not
going to be a shutdown API added after all.

Change-Id: If0f4e2066454df773bd9bf41ed65d3a10248a2d3
Signed-off-by: Paul Beesley <paul.beesley@arm.com>

drivers/io/io_storage.c

@@ -189,9 +189,6 @@ int io_dev_init(uintptr_t dev_handle, const uintptr_t init_params)
 	return result;
 }
 
-
-/* TODO: Consider whether an explicit "shutdown" API should be included */
-
 /* Close a connection to a device */
 int io_dev_close(uintptr_t dev_handle)
 {

include/drivers/io/io_storage.h

@@ -79,8 +79,6 @@ int io_dev_open(const struct io_dev_connector *dev_con,
  * re-initialisation */
 int io_dev_init(uintptr_t dev_handle, const uintptr_t init_params);
 
-/* TODO: Consider whether an explicit "shutdown" API should be included */
-
 /* Close a connection to a device */
 int io_dev_close(uintptr_t dev_handle);