removed (apparently) useless +version from classes, due to problems with the ObjC2 runtime on OpenBSD (thanks to Sebastian Reitenbach)

SOPE/NGCards/iCalObject.m

@@ -25,10 +25,6 @@
 
 @implementation iCalObject
 
-+ (int)version {
-  return 0;
-}
-
 // what shall we take, if no timeZone is specified in dateValues
 static NSTimeZone *defTZ = nil;
 + (void)setICalDefaultTimeZone:(NSTimeZone *)_timeZone {