gtk2 rbgtkrc.c: drop GTK_CHECK_VERSION(2,4,0)
gtk2 rbgtkmessagedialog.c: drop GTK_CHECK_VERSION(2,4,0)
gtk2 rbgtkfilesystemerror.c: drop GTK_CHECK_VERSION(2,4,0)
gtk2 rbgtkiconinfo.c: drop GTK_CHECK_VERSION(2,4,0)
gtk2 rbgtkexpander.c: drop GTK_CHECK_VERSION(2,4,0)
gtk2 rbgtkaccelmap.c: drop GTK_CHECK_VERSION(2,4,0)
gtk2 rbgtkwindow.c: drop GTK_CHECK_VERSION(2,4,0)
gtk2 rbgtktreemodelfilter.c: drop GTK_CHECK_VERSION(2,4,0)
gtk2 rbgtkcellrenderer.c: drop GTK_CHECK_VERSION(2,4,0)
gtk2 rbgtktoolitem.c: drop GTK_CHECK_VERSION(2,4,0)
gtk2 rbgtkseparatortoolitem.c: drop GTK_CHECK_VERSION(2,4,0)
gtk2 rbgtkaccelgroup.c: drop GTK_CHECK_VERSION(2,4,0)
gtk2 rbgdkdraw.c: drop GTK_CHECK_VERSION(2,4,0)
gtk2 rbgdkscreen.c: drop GTK_CHECK_VERSION(2,4,0)
gtk2 rbgtkradiotoolbutton.c: drop GTK_CHECK_VERSION(2,4,0)
gtk2 rbgtkfilefilter.c: drop GTK_CHECK_VERSION(2,4,0)
gtk2 rbgtkactiongroup.c: drop GTK_CHECK_VERSION(2,4,0)
gtk2 rbgtkbbox.c: drop GTK_CHECK_VERSION(2,4,0)
gtk2 rbgtkcomboboxentry.c: drop GTK_CHECK_VERSION(2,4,0)
gtk2 rbgtkfilechooserwidget.c: drop GTK_CHECK_VERSION(2,4,0)