gtk2 rbgtkmenu.c: drop GTK_CHECK_VERSION(2,4,0)
gtk2 rbgtkbutton.c: drop GTK_CHECK_VERSION(2,4,0)
gtk2 rbgtkradioaction.c: drop GTK_CHECK_VERSION(2,4,0)
gtk2 rbgtkdrag.c: drop GTK_CHECK_VERSION(2,4,0)
gtk2 rbgtkscale.c: drop GTK_CHECK_VERSION(2,4,0)
gtk2 rbgtkstock.c: drop GTK_CHECK_VERSION(2,4,0)
gtk2 rbgtkfontbutton.c: drop GTK_CHECK_VERSION(2,4,0)
gtk2 rbgtkentry.c: drop GTK_CHECK_VERSION(2,4,0)
gtk2 rbgtkconst.c: drop GTK_CHECK_VERSION(2,4,0)
gtk2 rbgtkicontheme.c: drop GTK_CHECK_VERSION(2,4,0)
gtk2 rbgtktooltip.c: drop GTK_CHECK_VERSION(2,4,0)
gtk2 rbgtktoolbutton.c: drop GTK_CHECK_VERSION(2,4,0)
gtk2 rbgtktextiter.c: drop GTK_CHECK_VERSION(2,4,0)
gtk2 rbgtkentrycompletion.c: drop GTK_CHECK_VERSION(2,4,0)
gtk2 rbgtkalignment.c: drop GTK_CHECK_VERSION(2,4,0)
gtk2 rbgtkfilechooserdialog.c: drop GTK_CHECK_VERSION(2,4,0)
gtk2 rbgtkfilechooser.c: drop GTK_CHECK_VERSION(2,4,0)
gtk2 rbgtktoggletoolbutton.c: drop GTK_CHECK_VERSION(2,4,0)
gtk2 rbgtkstyle.c: drop GTK_CHECK_VERSION(2,4,0)
gtk2 rbgtktoggleaction.c: drop GTK_CHECK_VERSION(2,4,0)