Remove the text OVERVIEW on overview page

I want to get rid of the text “overview” on the overview page in order to save some space.
None of my pages are showing a title, only this one.
How can I remove it?

I do not think that you can make this a setting on the overview page, but you can can select it on a per instance basis as one of the browser options. Under Help & AboutMiscellaneous select the Simple navigation bar on home page option.