Update connected count string in strings.xml and MeshService.kt

The string "Connected: %1$s of %2$s online" in strings.xml has been changed to "Connected: %1$s online".
The corresponding change has been made in MeshService.kt to use the updated string format, removing the reference to numNodes.

app/src/main/java/com/geeksville/mesh/service/MeshService.kt

@@ -228,8 +228,7 @@ class MeshService : Service(), Logging {
     private val notificationSummary
         get() = when (connectionState) {
             ConnectionState.CONNECTED -> getString(R.string.connected_count).format(
-                numOnlineNodes,
-                numNodes
+                numOnlineNodes
             )
             ConnectionState.DISCONNECTED -> getString(R.string.disconnected)
             ConnectionState.DEVICE_SLEEP -> getString(R.string.device_sleeping)

app/src/main/res/values/strings.xml

@@ -117,7 +117,7 @@
     <string name="share">Share</string>
     <string name="disconnected">Disconnected</string>
     <string name="device_sleeping">Device sleeping</string>
-    <string name="connected_count">Connected: %1$s of %2$s online</string>
+    <string name="connected_count">Connected: %1$s online</string>
     <string name="update_firmware">Update Firmware</string>
     <string name="ip_address">IP Address:</string>
     <string name="connected">Connected to radio</string>