I'm sure if you go into your clock app tape the 3 dot's go into settings it will give a opinion to remove the clock if not make your way into settings look for status bar notifications failing that do what I do go to YouTube your definitely find a video on your phone and how to remove your clock guaranteed I hope I've been some help
In Good Lock app under 'Unit' there is an option named Quick Star (not Good Start). Click this and toggle on. The second option within this unit is 'Visibility of indicator icons'. Click on that and under 'system icons' section you can then toggle on/off various indicator icons including the alarm clock icon. In the same unit there is also a 'clock settings' option that allows you to switch the digital clock from left to right or hide it completely. Hope this helps.