Switch eventTimezone2 to eventEndTimezone to fix crash bug

* eventTimezone2 is no longer a column in CalendarProvider
* For now, use eventEndTimezone
* A new calendar CL will migrate this column to SYNC1, at which
  point a new Exchange CL will change the definition that is
  currently marked STOPSHIP

Bug: 4452893
Change-Id: I64bc62ff3090afcfe4fe7df769698b363d6c1e59
1 file changed