Bug 838729 [System] Strict mode exceptions when launching any app r=arthurcc

Removed the unused "format" parameter from getDateComponentOrder() in SpinDatePicker. The parameter has not been used by any code since its introduction in commit f0c430c478b2893379446fa1076d801d91726c6c


https://bugzilla.mozilla.org/show_bug.cgi?id=838729

Signed-off-by: Rick Waldron <waldron.rick@gmail.com>