[NUI] Fix Button state issue (#1773)

* This fixes the issue that a checkbox selection can not be unselected.
* Note that this is temporary solution, it need to be fixed after
  the Selector priovides priority among the states.

Signed-off-by: Jiyun Yang <ji.yang@samsung.com>

diff --git a/src/Tizen.NUI.Components/Controls/Button.Internal.cs b/src/Tizen.NUI.Components/Controls/Button.Internal.cs
index 2d108bd..64c1504 100755 (executable)
--- a/src/Tizen.NUI.Components/Controls/Button.Internal.cs
+++ b/src/Tizen.NUI.Components/Controls/Button.Internal.cs
@@ -363,13 +363,6 @@ namespace Tizen.NUI.Components
                 isEnabled = stateEnabled;
             }
 
-            var stateSelected = (controlStateChangedInfo.CurrentState & ControlStates.Selected) == ControlStates.Selected;
-
-            if (isSelected != stateSelected)
-            {
-                isSelected = stateSelected;
-            }
-
             var statePressed = (controlStateChangedInfo.CurrentState & ControlStates.Pressed) == ControlStates.Pressed;
 
             if (isPressed != statePressed)