fs/dlm: Remove "select SRCU"

Now that the SRCU Kconfig option is unconditionally selected, there is
no longer any point in selecting it.  Therefore, remove the "select SRCU"
Kconfig statements.
Signed-off-by: Paul E. McKenney <paulmck@kernel.org>
Signed-off-by: David Teigland <teigland@redhat.com>

fs/dlm/Kconfig

@@ -4,7 +4,6 @@ menuconfig DLM
 	depends on INET
 	depends on SYSFS && CONFIGFS_FS && (IPV6 || IPV6=n)
 	select IP_SCTP
-	select SRCU
 	help
 	A general purpose distributed lock manager for kernel or userspace
 	applications.