cairo-util: Don't show a resize cursor on edges when we're maximized
cairo-util: Don't show a resize cursor on edges when we're maximized

This is substantially confusing to users, namely me.

krh: Edited to just set grip size to zero.

kwm81/weston,Fantu/compositor-spice,Tarnyko/weston-xdg_surface_present,eyolfson/weston,kwm81/weston,sir-murray/weston,jonnylamb/weston,krezovic/weston,giucam/weston,xorgy/weston,eyolfson/weston,Gnurou/weston,krezovic/weston,udoprog/weston,mchalupa/weston,Tarnyko/weston-xdg_surface_present,giucam/weston,Gnurou/weston,udoprog/weston,sir-murray/weston,Fantu/compositor-spice,xorgy/weston,Fantu/compositor-spice,jonnylamb/weston,mchalupa/weston