need help changing the notification bar

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http://forum.xda-developers.com – im using xperia play and im trying to get rid of the date in the notification bar by editing the xml in systemui.apk with no luck, i dont know which line to change.. its a waste of space thats why i want to remove it. uot kitchen cant remove it, its just make the fonts transperent. -- can someone advice what to do? thanks. systemui file: http://www.2shared.com/file/oCW_YKmm/SystemUI.html? (HowTos)