--- a/netwerk/base/nsIOService.cpp
+++ b/netwerk/base/nsIOService.cpp
@@ -160,17 +160,16 @@ int16_t gBadPortList[] = {
   6668,    // Alternate IRC [Apple addition]
   6669,    // Alternate IRC [Apple addition]
   0,    // This MUST be zero so that we can populating the array
 };
 
 static const char kProfileChangeNetTeardownTopic[] = "profile-change-net-teardown";
 static const char kProfileChangeNetRestoreTopic[] = "profile-change-net-restore";
 static const char kProfileDoChange[] = "profile-do-change";
-static const char kNetworkActiveChanged[] = "network-active-changed";
 
 // Necko buffer defaults
 uint32_t   nsIOService::gDefaultSegmentSize = 4096;
 uint32_t   nsIOService::gDefaultSegmentCount = 24;
 
 bool nsIOService::sTelemetryEnabled = false;
 
 NS_IMPL_ISUPPORTS(nsAppOfflineInfo, nsIAppOfflineInfo)
@@ -244,17 +243,16 @@ nsIOService::Init()
     nsCOMPtr<nsIObserverService> observerService = services::GetObserverService();
     if (observerService) {
         observerService->AddObserver(this, kProfileChangeNetTeardownTopic, true);
         observerService->AddObserver(this, kProfileChangeNetRestoreTopic, true);
         observerService->AddObserver(this, kProfileDoChange, true);
         observerService->AddObserver(this, NS_XPCOM_SHUTDOWN_OBSERVER_ID, true);
         observerService->AddObserver(this, NS_NETWORK_LINK_TOPIC, true);
         observerService->AddObserver(this, NS_WIDGET_WAKE_OBSERVER_TOPIC, true);
-        observerService->AddObserver(this, kNetworkActiveChanged, true);
     }
     else
         NS_WARNING("failed to get observer service");
 
     Preferences::AddBoolVarCache(&sTelemetryEnabled, "toolkit.telemetry.enabled", false);
     Preferences::AddBoolVarCache(&mOfflineMirrorsConnectivity, OFFLINE_MIRRORS_CONNECTIVITY, true);
 
     gIOService = this;
@@ -1487,48 +1485,16 @@ nsIOService::Observe(nsISupports *subjec
     } else if (!strcmp(topic, NS_NETWORK_LINK_TOPIC)) {
         OnNetworkLinkEvent(NS_ConvertUTF16toUTF8(data).get());
     } else if (!strcmp(topic, NS_WIDGET_WAKE_OBSERVER_TOPIC)) {
         // coming back alive from sleep
         // this indirection brought to you by:
         // https://bugzilla.mozilla.org/show_bug.cgi?id=1152048#c19
         nsCOMPtr<nsIRunnable> wakeupNotifier = new nsWakeupNotifier(this);
         NS_DispatchToMainThread(wakeupNotifier);
-    } else if (!strcmp(topic, kNetworkActiveChanged)) {
-#ifdef MOZ_WIDGET_GONK
-        if (IsNeckoChild()) {
-          return NS_OK;
-        }
-        nsCOMPtr<nsINetworkInfo> interface = do_QueryInterface(subject);
-        if (!interface) {
-            return NS_ERROR_FAILURE;
-        }
-        int32_t state;
-        if (NS_FAILED(interface->GetState(&state))) {
-            return NS_ERROR_FAILURE;
-        }
-
-        bool wifiActive = IsWifiActive();
-        int32_t newWifiState = wifiActive ?
-            nsINetworkInfo::NETWORK_TYPE_WIFI :
-            nsINetworkInfo::NETWORK_TYPE_MOBILE;
-        if (mPreviousWifiState != newWifiState) {
-            // Notify wifi-only apps of their new status
-            int32_t status = wifiActive ?
-                nsIAppOfflineInfo::ONLINE : nsIAppOfflineInfo::OFFLINE;
-
-            for (auto it = mAppsOfflineStatus.Iter(); !it.Done(); it.Next()) {
-                if (it.UserData() == nsIAppOfflineInfo::WIFI_ONLY) {
-                    NotifyAppOfflineStatus(it.Key(), status);
-                }
-            }
-        }
-
-        mPreviousWifiState = newWifiState;
-#endif
     }
 
     return NS_OK;
 }
 
 // nsINetUtil interface
 NS_IMETHODIMP
 nsIOService::ParseRequestContentType(const nsACString &aTypeHeader,