How to hide huge blue Share button ?

[Ali5E13]

Hello, I just installed Version : 21.1.20140 and there is this huge blue Sharebutton with now visible way to hide it o remove it.

It has exactly the same function as the mail icon and i don't udesrtand why we have to live with this addition useless button..
Please let us know how to remove it.

[Bernd Alheit]

They uses different functions.

[JR Boulay]

You cannot hide it but you can minimise it.

Right-click on the toolbar: Hide Share Button Label