Fix typos involving "the the"

Change-Id: I179264ee6681a7ba4488b9f1c6bce1a19b4e1772
Signed-off-by: Jonathan Neuschäfer <j.neuschaefer@gmx.net>
Reviewed-on: https://review.coreboot.org/c/30160
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Angel Pons <th3fanbus@gmail.com>

payloads/libpayload/curses/PDCurses/pdcurses/clear.c

@@ -23,7 +23,7 @@ RCSID("$Id: clear.c,v 1.35 2008/07/13 16:08:18 wmcbrine Exp $")
         every cell of the window.
 
         clear() and wclear() are similar to erase() and werase(), but
-        they also call clearok() to ensure that the the window is
+        they also call clearok() to ensure that the window is
         cleared on the next wrefresh().
 
         clrtobot() and wclrtobot() clear the window from the current