tty: tty_ldisc: Remove the repeated word 'the'

Remove the repeated word 'the' following advice of checkpatch.pl
Signed-off-by: NXiaofei Tan <tanxiaofei@huawei.com>
Link: https://lore.kernel.org/r/1617779210-51576-11-git-send-email-tanxiaofei@huawei.comSigned-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/tty/tty_ldisc.c

@@ -147,7 +147,7 @@ static int tty_ldisc_autoload = IS_BUILTIN(CONFIG_LDISC_AUTOLOAD);
  *	Returns: -EINVAL if the discipline index is not [N_TTY..NR_LDISCS] or
  *			 if the discipline is not registered
  *		 -EAGAIN if request_module() failed to load or register the
- *			 the discipline
+ *			 discipline
  *		 -ENOMEM if allocation failure
  *
  *		 Otherwise, returns a pointer to the discipline and bumps the