Revert of Retrieve "connected" property from BLE devices.

device/bluetooth/bluetooth_task_manager_win.cc

Index: device/bluetooth/bluetooth_task_manager_win.cc
diff --git a/device/bluetooth/bluetooth_task_manager_win.cc b/device/bluetooth/bluetooth_task_manager_win.cc
index dd7ff04a58606a2d6d1433ebcf1dadf50ab7e630..a44c59e00ce1fefea4359e9ef1f2cdc77c25e042 100644
--- a/device/bluetooth/bluetooth_task_manager_win.cc
+++ b/device/bluetooth/bluetooth_task_manager_win.cc
@@ -406,7 +406,6 @@
         DeviceState* device_state = new DeviceState();
         device_state->name = device_info->friendly_name;
         device_state->address = BluetoothAddressToString(device_info->address);
-        device_state->connected = device_info->connected;
         device_list->push_back(device_state);
       }
     }