Use old date format for the single line clock, so that we now
support (for single line clock) different clock representations.
For example, French Canadian uses an h instead of a colon
(13 h 01 instead of 13:01).
Test: manual
Bug: 186726401
Fixes: 191761465
Change-Id: If97a49780029f24dc99625a310729630b69e7a68