removed unused provider regions
removed unused provider regions

the origin of those lines are from pre opensource times
since the move to angular those fields seem not to be used anymore
(transferred from ManageIQ/manageiq@d396ef4808b1be6350c995aa844e63eb5b9b07e4)

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