Revert "Cherry pick branch 'genexuslabs:broken-age' into beta"

This reverts commit a9f42fd.

Author: tomas-sexenian

common/src/main/java/com/genexus/CommonUtil.java

@@ -1600,10 +1600,6 @@ public static int age(Date fn, Date today)
 	{
 		Date fnDate    = resetTime(fn);
 		Date todayDate = resetTime(today);
-		Date sentinel  = newNullDate();
-		if (fnDate.equals(sentinel) || todayDate.equals(sentinel)) {
-			return 0;
-		}
 
 		int age = 0;
 		int	multiplier = 1;