gtk2 rbgtk.c: drop GTK_CHECK_VERSION(2,2,0)
gtk2 rbgtkcolormap.c: drop GTK_CHECK_VERSION(2,2,0)
gtk2 rbgtkcursor.c: drop GTK_CHECK_VERSION(2,2,0)
gtk2 rbgtkdisplay.c: drop GTK_CHECK_VERSION(2,2,0)
gtk2 rbgtkdisplaymanager.c: drop GTK_CHECK_VERSION(2,2,0)
gtk2 rbgtkaccelgroup.c: drop GTK_CHECK_VERSION(2,2,0)
gtk2 rbgtkclipboard.c: drop GTK_CHECK_VERSION(2,2,0)
gtk2 rbgtkcolorsel.c: drop GTK_CHECK_VERSION(2,2,0)
gtk2 rbgtkiconsize.c: drop GTK_CHECK_VERSION(2,2,0)
gtk2 rbgtkinvisible.c: drop GTK_CHECK_VERSION(2,2,0)
gtk2 rbgtkliststore.c: drop GTK_CHECK_VERSION(2,2,0)
gtk2 rbgtkmenu.c: drop GTK_CHECK_VERSION(2,2,0)
gtk2 rbgtkmenushell.c: drop GTK_CHECK_VERSION(2,2,0)
gtk2 rbgtknotebook.c: drop GTK_CHECK_VERSION(2,2,0)
gtk2 rbgtkselection.c: drop GTK_CHECK_VERSION(2,2,0)
gtk2 rbgtkselectiondata.c: drop GTK_CHECK_VERSION(2,2,0)
gtk2 rbgtksetting.c: drop GTK_CHECK_VERSION(2,2,0)
gtk2 rbgtkstock.c: drop GTK_CHECK_VERSION(2,2,0)
gtk2 rbgtktreeiter.c: drop GTK_CHECK_VERSION(2,2,0)
gtk2 rbgtktreemodelsort.c: drop GTK_CHECK_VERSION(2,2,0)