Remove dead code after merge

Author: LEDfan

src/main/kotlin/eu/openanalytics/shinyproxyoperator/Operator.kt

@@ -210,7 +210,6 @@ class Operator(client: NamespacedKubernetesClient? = null,
         serviceListener.stop()
         configMapListener.stop()
         ingressController.stop()
-        podRetriever.stop()
     }
 
     companion object {

src/main/kotlin/eu/openanalytics/shinyproxyoperator/controller/PodRetriever.kt

@@ -73,8 +73,4 @@ class PodRetriever(private val client: NamespacedKubernetesClient) {
         return namespaces
     }
 
-    fun stop() {
-        informers.forEach { it.value.stop() }
-    }
-
 }