fix: description on skins, stickers, patches, graffiti and remove unused keys.

[piyanggoon]

Should we use "<br><br>" then "\\n\\n" ?

This sticker can be applied to any weapon you own and can be scraped to look more worn. You can scrape the same sticker multiple times, making it a bit more worn each time, until it is removed from the weapon.

This foil sticker was autographed by professional player Eric Hoag playing for Team Liquid at DreamHack Cluj-Napoca 2015.\n\n50% of the proceeds from the sale of this sticker support the included players and organizations.

With a smaller magazine than its unmuffled counterpart, the silenced M4A1 provides quieter shots with less recoil and better accuracy. It has been painted with dark green metallic paint and uses a crystallizing mask to create a pattern.\n\nEveryone wants to make an impact

[piyanggoon]

{
  "id":"key-4904",
  "name":null,
  "description":"This key will open any Valve Series Weapon Case. Non-Valve Series cases (e.g. eSports Case) require their own key to open.",
  "crates":[
    {
      "id":"crate-4905",
      "name":null
    }
  ]
}

[ByMykel]

Thanks, will check it this afternoon

[ByMykel]

LGTM. Thank you for the PR. ❤️