Revert "Fix timezone offset calculation using Gregorian calendar"

This reverts commit 310468d.

Author: avazirna

src/main/java/org/javarosa/xform/util/CalendarUtils.java

@@ -420,9 +420,7 @@ public static long toMillisFromJavaEpoch(int year, int month, int day) {
     public static long toMillisFromJavaEpoch(int year, int month, int day, DateTimeZone currentTimeZone) {
         int daysFromMinDay = countDaysFromMinDay(year, month, day);
         long millisFromMinDay = daysFromMinDay * UniversalDate.MILLIS_IN_DAY;
-
-        int timezoneOffsetFromUTC = currentTimeZone.getOffset(millisFromMinDay + MIN_MILLIS_FROM_JAVA_EPOCH);
-
+        int timezoneOffsetFromUTC = currentTimeZone.getOffset(millisFromMinDay);
         long millisNormalizedToUTC = millisFromMinDay - timezoneOffsetFromUTC;
         return millisNormalizedToUTC + MIN_MILLIS_FROM_JAVA_EPOCH;
     }