Completely hide the start button in Windows 8.1

The start button in Windows 8.1 can be hidden yet, but still pops up if you move the mouse to the bottom left. Then, it even overlaps the first icon open in the taskbar.

It often happens to me that I accidentaly make the start button visible even though I just wanted to click on the first itme in the taskbar, but that one is then overlapped and hard to hit.

Make it possible to hide the button completely, as in Windows 7 (the button doesn't appear, but a click in the left most pixel line still opens the start menu / screen).