[Bluetooth][Non-ACR] Fix Hid unregister callback not invoke issue (#3772)

diff --git a/src/Tizen.Network.Bluetooth/Tizen.Network.Bluetooth/BluetoothHidImpl.cs b/src/Tizen.Network.Bluetooth/Tizen.Network.Bluetooth/BluetoothHidImpl.cs
index f4361c6..1808b6a 100644 (file)
--- a/src/Tizen.Network.Bluetooth/Tizen.Network.Bluetooth/BluetoothHidImpl.cs
+++ b/src/Tizen.Network.Bluetooth/Tizen.Network.Bluetooth/BluetoothHidImpl.cs
@@ -37,7 +37,7 @@ namespace Tizen.Network.Bluetooth
             }
             remove
             {
-                //nothing to be done
+                _hidConnectionChanged -= value;
             }
         }