Googling this problem I surprisingly found 100% opposition to this obtrusive *new* thing, but no solution. Strangely no comment from Google. It wasn't really important, until I couldn't remove it, now it is my mission in life - just joking... but I hate it, I hate it, I hate it.
Why on Earth didn't Google provide an option button to toggle the visibility of the thing?
Deleting cookies doesn't work, using several other browsers also no luck, nor writing.