From 6a58f046e6c83aabdc3bbfac05f6cbcdf47db5db Mon Sep 17 00:00:00 2001
From: Gregory Nutt <gnutt@nuttx.org>
Date: Thu, 25 Aug 2016 08:09:23 -0600
Subject: [PATCH] CONFIG_LIBC_DIFFTIME is no longer used, but was still in
 Kconfig file.  Noted by Sebastien Lorquet

---
 libc/Kconfig | 7 -------
 1 file changed, 7 deletions(-)

diff --git a/libc/Kconfig b/libc/Kconfig
index 8cbe5c7f7a1..4a2fa5ed49e 100644
--- a/libc/Kconfig
+++ b/libc/Kconfig
@@ -350,13 +350,6 @@ config TIME_EXTENDED
 
 		Note: tm_isdst is always 0
 
-config LIBC_DIFFTIME
-	bool "Add support for difftime()"
-	default "n"
-	---help---
-		Add POSIX support for computing the difference between two time_t
-		values.
-
 config LIB_SENDFILE_BUFSIZE
 	int "sendfile() buffer size"
 	default 512