VOL-3244 - remove competing mode flag

- removed competing core command line argument
- changed references from affinity router to device discovery

Change-Id: I40aa553762ef7a4f1c87932c5a5b2ed3038ced8d
diff --git a/vendor/modules.txt b/vendor/modules.txt
index c23335f..b197853 100644
--- a/vendor/modules.txt
+++ b/vendor/modules.txt
@@ -99,7 +99,7 @@
 github.com/modern-go/concurrent
 # github.com/modern-go/reflect2 v1.0.1
 github.com/modern-go/reflect2
-# github.com/opencord/voltha-lib-go/v3 v3.1.16
+# github.com/opencord/voltha-lib-go/v3 v3.1.21
 github.com/opencord/voltha-lib-go/v3/pkg/adapters
 github.com/opencord/voltha-lib-go/v3/pkg/adapters/adapterif
 github.com/opencord/voltha-lib-go/v3/pkg/adapters/common