Eliminating Lock Screen Clock Widget
Total wet behind the ears, noob first post.
I was unable to find the answer on the forums so I thought I would type one up. On my first gen Nexus 7, running a CM nightly it seems the user is unable to eliminate (only replace) the clock widget on the lock screen for a cleaner look. The way I found around this is to download the UCCW app by VasuDev, a free app that enables you to custom make widgets, then just create a completely transparent one (set the alpha setting to "0") and have that as the lock screen widget.
Hope this helps.