tests: remove --disable-ipv6

With --disable-ipv6 gone, the IPv6 detection logic in the tests is not
needed anymore either.

Signed-off-by: David Lamparter <equinox@opensourcerouting.org>
Acked-by: Paul Jakma <paul@jakma.org>
diff --git a/tests/bgpd.tests/testbgpcap.exp b/tests/bgpd.tests/testbgpcap.exp
index 1bbdfd1..2572623 100644
--- a/tests/bgpd.tests/testbgpcap.exp
+++ b/tests/bgpd.tests/testbgpcap.exp
@@ -8,10 +8,10 @@
 # proc simpletest { start } {
 
 simpletest "MP4: MP IP/Uni"
-simpletest_nov6 "MPv6: MP IPv6/Uni"
+simpletest "MPv6: MP IPv6/Uni"
 simpletest "MP2: MP IP/Multicast"
-simpletest_nov6 "MP3: MP IP6/MPLS-labeled VPN"
-simpletest_nov6 "MP5: MP IP6/MPLS-VPN"
+simpletest "MP3: MP IP6/MPLS-labeled VPN"
+simpletest "MP5: MP IP6/MPLS-VPN"
 simpletest "MP6: MP IP4/MPLS-laveled VPN"
 simpletest "MP8: MP unknown AFI/SAFI"
 simpletest "MP-short: MP IP4/Unicast, length too short (< minimum)"