Slight code refactor in "Skills" page

[softy-dev]

This PR:

• Removes a part of the code that deals with quests (since it is now in the Farmer page, I presume it is no longer needed here);
• Adds a comment;
• Changes the AccordionTrigger's text content from "Skill Achievements" to "Skills", following the project's apparent rule of naming them according to whether the section tracks only achievements or not (in the case of Skills, it also tracks the skills themselves, not just the achievements; a similar example is the "Stardrops" section).

[vercel]

@nekosoffy is attempting to deploy a commit to the stardew Team on Vercel.

A member of the Team first needs to authorize it.

[clxmente]

awesome thx