tree: Drop repeated words

Found-by: linter
Change-Id: I7c6d0887a45fdb4b6de294770a7fdd5545a9479b
Signed-off-by: Alexander Goncharov <chat@joursoir.net>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/72795
Reviewed-by: Nicholas Chin <nic.c3.14@gmail.com>
Reviewed-by: Elyes Haouas <ehaouas@noos.fr>
Reviewed-by: Eric Lai <eric_lai@quanta.corp-partner.google.com>
Reviewed-by: Erik van den Bogaert <ebogaert@eltan.com>
Reviewed-by: Frans Hendriks <fhendriks@eltan.com>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>

src/vendorcode/eltan/security/mboot/mboot.c

@@ -342,7 +342,7 @@ int __attribute__((weak))mb_measure(int wake_from_s3)
  *
  * mb_measure_log_start
  *
- * performs the measurements defined by the the board routines.
+ * performs the measurements defined by the board routines.
  *
  * The logging is defined by the mb_log_list structure
  *