The calendar is the first and only tab of the Info Centre which cannot be deleted. However, any number of other tabs with different dates and in different formats can be added.
Go to the More... tab next to the Calendar tab on the right-hand side. A list will open with all other available tabs.
Click on Add and select first the type of data source you want to make, then the specific record, link or list. The choice is large and business-specific.
To delete a tab, select the desired tab in the list and click on Remove.