weston-info: remove timerfd termination hack
weston-info: remove timerfd termination hack

Use wl_display_roundtrip to listen exactly as long as necessary.

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