To remove the clock from the menu bar of Ubuntu, follow the below procedure:
Click on the Settings menu > System Settings.
Go to System > Time & Date
Click on the Clock tab
Uncheck "Show a clock in the menu bar".
CCM is a leading international tech website. Our content is written in collaboration with IT experts, under the direction of Jeff Pillou, founder of CCM.net. CCM reaches more than 50 million unique visitors per month and is available in 11 languages.