Default [Q] What can I do about logo in corner?

I hope this question is not as dumb as I feel it is, but here we go. In the bottom left corner of my home screen is a logo, it features the google+ logo, when I double tap it, a list is opened...

Theme settings
Manage apps
Manage screens
Apex settings
System settings
Lock desktop

I would like to delete or at least move this logo but can not.

Sorry, and thanks in advance.