gtk2 rbgtkradioaction.c: drop #if ! GTK_CHECK_VERSION(2,10,0)
gtk2 rbgtkradioaction.c: drop #if ! GTK_CHECK_VERSION(2,10,0)

Because of drop GTK+ < 2.10 support, it is unneeded.

kitachro/ruby-gnome2,kitachro/ruby-gnome2,kitachro/ruby-gnome2,kitachro/ruby-gnome2,kitachro/ruby-gnome2