SimpleDateFormat: Reset timezone after parse.

This reverts to Android M behaviour, which happens to be more
consistent and predictable.

bug: 27760434

(cherry picked from commit 2015e08d682be61dacd76c51bb0345f357fc4e96)

Change-Id: I67789bbc6d98c6a1d5816a119e3d9a379ff90ed6
2 files changed