How Do I remove minimize, maximize, and close buttons in Ubuntu 18.04?

window-manager 18.04 gnome titlebar window-buttons

If you want to get rid of those window control buttons from all the windows run the following command in Terminal

gsettings set org.gnome.desktop.wm.preferences button-layout :

To undo this step, run 

gsettings reset org.gnome.desktop.wm.preferences button-layout

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