Are you asking for complete removal of the duty list quest? then you can click on abandon, if you're asking about rechanging the order of your duty list you can by going into the journal to prioritise the list to the quest you wanna complete, if you're thinking the texts are too big, you can adjust the size of the duty quest box smaller by going into the HUD layout in config and change the size so it's not overbearing. if you don't wanna see it, then you can disable it from the HUD layout so you do really have multiple options on how you want it to be......

as for achievement tab, i personally wouldn't want it as i don't want my screen to be overloaded with all the things that comes out but I imagine since we can change the HUD layout, the option should be there for players who wants it but me personally wouldn't.