[Merge on 9/18] Remove nexus feature flag (#391)

* Remove nexus feature flag

* PR review changes

app/app.go

@@ -27,20 +27,8 @@ func NewApp(params AppParams) (*cli.App, error) {
 			InsecureConnectionFlag,
 			EnableDebugLogsFlag,
 		},
+		Commands: params.Commands,
 	}
 
-	var commands []*cli.Command
-
-	for _, command := range params.Commands {
-		if command.Name == "nexus" {
-			if IsFeatureEnabled(NexusFeatureFlag) {
-				commands = append(commands, command)
-			}
-		} else {
-			commands = append(commands, command)
-		}
-	}
-	app.Commands = commands
-
 	return app, nil
 }

app/feature.go

@@ -12,11 +12,10 @@ import (
 
 var (
 	GCPSinkFeatureFlag  = "enable-gcp-sink"
-	NexusFeatureFlag    = "enable-nexus"
 	featureflagFileName = "feature.json"
 )
 
-var supportFeatureFlags = []string{GCPSinkFeatureFlag, NexusFeatureFlag}
+var supportFeatureFlags = []string{GCPSinkFeatureFlag}
 
 type FeatureFlag struct {
 	Name  string `json:"Name"`
@@ -133,14 +132,6 @@ func NewFeatureCommand() (CommandOut, error) {
 						return toggleFeature(GCPSinkFeatureFlag)
 					},
 				},
-				{
-					Name:    "toggle-nexus",
-					Aliases: []string{"tnxs"},
-					Usage:   "switch nexus on/off",
-					Action: func(c *cli.Context) error {
-						return toggleFeature(NexusFeatureFlag)
-					},
-				},
 				{
 					Name:    "get",
 					Aliases: []string{"g"},