Remove bridgeName field from CNI windows conflist files (#3135)

remove bridgeName field from CNI windows conflist files

cni/azure-windows-multitenancy.conflist

@@ -4,8 +4,6 @@
     "plugins": [
         {
             "type": "azure-vnet",
-            "mode": "bridge",
-            "bridge": "azure0",
             "multiTenancy":true,
             "enableSnatOnHost":true,
             "enableExactMatchForPodName": true,

cni/azure-windows-swift-overlay-dualstack.conflist

@@ -5,7 +5,6 @@
     "plugins": [
         {
             "type": "azure-vnet",
-            "bridge": "azure0",
             "capabilities": {
                 "portMappings": true,
                 "dns": true

cni/azure-windows-swift-overlay.conflist

@@ -5,7 +5,6 @@
     "plugins": [
         {
             "type": "azure-vnet",
-            "bridge": "azure0",
             "capabilities": {
                 "portMappings": true,
                 "dns": true

cni/azure-windows-swift.conflist

@@ -5,7 +5,6 @@
     "plugins": [
         {
             "type": "azure-vnet",
-            "bridge": "azure0",
             "executionMode": "v4swift",
             "capabilities": {
                 "portMappings": true,

cni/azure-windows.conflist

@@ -5,8 +5,6 @@
     "plugins": [
         {
             "type": "azure-vnet",
-            "mode": "bridge",
-            "bridge": "azure0",
             "capabilities": {
                 "portMappings": true,
                 "dns": true
@@ -45,4 +43,4 @@
             ]
         }
     ]
-}
+}