Fix bandwagoner import

Author: rlazo

firebase-config/bandwagoner/src/main/java/com/googletest/firebase/remoteconfig/bandwagoner/RealtimeKtListener.kt

@@ -17,7 +17,7 @@
 package com.googletest.firebase.remoteconfig.bandwagoner
 
 import android.util.Log
-import com.google.firebase.ktx.Firebase
+import com.google.firebase.Firebase
 import com.google.firebase.remoteconfig.configUpdates
 import com.google.firebase.remoteconfig.remoteConfig
 import java.util.concurrent.CompletableFuture