gtk2 rbgdkwindow.c: drop GTK_CHECK_VERSION(2,10,0)
gtk2 rbgdkscreen.c: drop GTK_CHECK_VERSION(2,10,0)
gtk2 rbgdkdisplay.c: drop GTK_CHECK_VERSION(2,10,0)
gtk2 rbgtkcellrendererspin.c: drop GTK_CHECK_VERSION(2,10,0)
gtk2 rbgtkrecentmanager.c: drop GTK_CHECK_VERSION(2,10,0)
gtk2 rbgtkdrag.c: drop GTK_CHECK_VERSION(2,10,0)
gtk2 rbgtkstock.c: drop GTK_CHECK_VERSION(2,10,0)
gtk2 rbgtkpapersize.c: drop GTK_CHECK_VERSION(2,10,0)
gtk2 rbgtkprintoperation.c: drop GTK_CHECK_VERSION(2,10,0)
gtk2 rbgtklinkbutton.c: drop GTK_CHECK_VERSION(2,10,0)
gtk2 rbgtksizegroup.c: drop GTK_CHECK_VERSION(2,10,0)
gtk2 rbgtkselectiondata.c: drop GTK_CHECK_VERSION(2,10,0)
gtk2 rbgtkprintoperationpreview.c: drop GTK_CHECK_VERSION(2,10,0)
gtk2 rbgtktreeview.c: drop GTK_CHECK_VERSION(2,10,0)
gtk2 rbgtkrecentchooser.c: drop GTK_CHECK_VERSION(2,10,0)
gtk2 rbgtkcellrendereraccel.c: drop GTK_CHECK_VERSION(2,10,0)
gtk2 rbgtkstatusicon.c: drop GTK_CHECK_VERSION(2,10,0)
gtk2 rbgtktreestore.c: drop GTK_CHECK_VERSION(2,10,0)
gtk2 rbgtkpagesetup.c: drop GTK_CHECK_VERSION(2,10,0)
gtk2 rbgtkstyle.c: drop GTK_CHECK_VERSION(2,10,0)