tests: fix formatting error to make black clean

Signed-off-by: Pat Ruddy <pat@voltanet.io>

diff --git a/tests/topotests/bgp-snmp-mplsl3vpn/test_bgp_snmp_mplsvpn.py b/tests/topotests/bgp-snmp-mplsl3vpn/test_bgp_snmp_mplsvpn.py
index 89f5554d418048b99ac1840ac32defe67665b580..d0d1e57ecfd94a966eda290a0b9594b725db1def 100755 (executable)
--- a/tests/topotests/bgp-snmp-mplsl3vpn/test_bgp_snmp_mplsvpn.py
+++ b/tests/topotests/bgp-snmp-mplsl3vpn/test_bgp_snmp_mplsvpn.py
@@ -505,10 +505,8 @@ def test_r1_mplsvpn_VrfTable():
     associated_int = r1_snmp.get(
         "mplsL3VpnVrfAssociatedInterfaces.{}".format(snmp_str_to_oid("VRF-a"))
     )
-    assertmsg = (
-        "mplsL3VpnVrfAssociatedInterfaces incorrect should be 3 value {}".format(
-            associated_int
-        )
+    assertmsg = "mplsL3VpnVrfAssociatedInterfaces incorrect should be 3 value {}".format(
+        associated_int
     )
 
     assert associated_int == "3", assertmsg