Revert "Bug 927817 - test_clock_turn_on_off_alarm.py is getting a StaleElementException against desktopb2g"

This reverts commit f846296e7b9222bf874409245e36102f1e862b77.
Revert "Bug 923448 - In test_clock_turn_on_off_alarm.py remove the sleep and add a wait_for_checkbox_state_to_change"

This reverts commit da8326f967be8e30052063c76685d1792868e492.