23Sha-ger
I actually do use System UI Tuner myself and it works fine for this purpose.
However it's worth noting it doesn't matter right now anyways as the recent Android design refresh Broke System UI Tuner's ability to hide the clock which is easily my most hated part of the new design refresh. Some users are currently theorizing the key for it may have gotten changed. I wouldn't know.
If someone could pitch in that would be appreciated... I miss not seeing my clock...