Remove unused /static/buttons.html.haml
Remove unused /static/buttons.html.haml

Looks like a copy of app/views/layouts/angular/_x_edit_buttons_angular.html.haml

We should probably wrap that one in a component and thus move it here eventually, but, right now, this is dead code.
(transferred from ManageIQ/manageiq@b4575c339533438aa8282894e6b12468a97976d6)

ManageIQ/manageiq-ui-classic,ManageIQ/manageiq-ui-classic,ManageIQ/manageiq-ui-classic,ManageIQ/manageiq-ui-classic