Do not initialize the analytics client if no write key set

kontrol-service/api/analytics.go

@@ -20,7 +20,7 @@ const (
 
 // NewAnalyticsWrapper creates a new AnalyticsWrapper
 func NewAnalyticsWrapper(isDevMode bool, writeKey string) *AnalyticsWrapper {
-	if !isDevMode {
+	if !isDevMode && writeKey != "" {
 		// This is the Segment write key for the "kontrol-service" project. It is not
 		// a sensitive value, but it could be extracted to an env var in the future
 		// to separate dev and prod traffic if desired.