Revert of bluetooth: bluez: Fixed issue with missing notifications after reconnect.

device/bluetooth/bluez/bluetooth_device_bluez.cc

Index: device/bluetooth/bluez/bluetooth_device_bluez.cc
diff --git a/device/bluetooth/bluez/bluetooth_device_bluez.cc b/device/bluetooth/bluez/bluetooth_device_bluez.cc
index 50b54cbb5d33ac6080ddf52c448ba9ccf13be500..2a91a49f6ab1af727b671461e7c4a7fa7b06ea38 100644
--- a/device/bluetooth/bluez/bluetooth_device_bluez.cc
+++ b/device/bluetooth/bluez/bluetooth_device_bluez.cc
@@ -928,9 +928,6 @@
 
 void BluetoothDeviceBlueZ::OnDisconnect(const base::Closure& callback) {
   VLOG(1) << object_path_.value() << ": Disconnected";
-  // Do not notify about changed device since this is already done by
-  // the dbus::PropertySet and the property change callback for BlueZ.
-  DidDisconnectGatt(false /* notifyDeviceChanged */);
   callback.Run();
 }