Kconfig: Remove reference to external mqueue library

Remove the reference to an external mqueue library since that was
merged into glibc in 2004.

Signed-off-by: Robert P. J. Day <rpjday@mindspring.com>
Signed-off-by: Adrian Bunk <bunk@stusta.de>

init/Kconfig

@@ -143,9 +143,7 @@ config POSIX_MQUEUE
 	  queues every message has a priority which decides about succession
 	  of receiving it by a process. If you want to compile and run
 	  programs written e.g. for Solaris with use of its POSIX message
-	  queues (functions mq_*) say Y here. To use this feature you will
-	  also need mqueue library, available from
-	  <http://www.mat.uni.torun.pl/~wrona/posix_ipc/>
+	  queues (functions mq_*) say Y here.
 
 	  POSIX message queues are visible as a filesystem called 'mqueue'
 	  and can be mounted somewhere if you want to do filesystem