I want to remove this section in red container. Please suggest what I should do to solve this issue?
The first place I'd check is Menus -> Main Menu -> Learning -> Page Page Display -> Page Heading.
If this doesn't help, inspecting the unwanted text with FireBug or Developer Tools or similar might help narrow down the search to a menu heading or a module or something else.
Without access to the site or more information, answers here will only be a guess.
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