Don't have a clue if I accidentally changed a setting or not, but this is aggravating the living crap out of me. This is in my lock screen. Never used.to have it. Started happening Friday
If what you want to do is take off the Communication Notifications off the lockscreen, what you need to do is just to leave the widget pressed on the lockscreen and the option to delete it will appear normally on the top of the screen, after that you'll have again the default clock.
I had tried that, but didnt expand the box the first time. I had to move my finger towards the bottom of the screen and expand that communication box before it gave me the trash can