chore: remove createdAt in favour of created_at

packages/megalodon/src/misskey/api_client.ts

@@ -88,7 +88,6 @@ namespace MisskeyAPI {
         suspended: null,
         limited: null,
         created_at: u.createdAt ? u.createdAt : '',
-        createdAt: u.createdAt,
         followers_count: 0,
         following_count: 0,
         statuses_count: 0,
@@ -125,7 +124,6 @@ namespace MisskeyAPI {
         suspended: null,
         limited: null,
         created_at: u.createdAt,
-        createdAt: u.createdAt,
         followers_count: u.followersCount,
         following_count: u.followingCount,
         statuses_count: u.notesCount,
@@ -271,7 +269,6 @@ namespace MisskeyAPI {
           : '',
         plain_content: n.text ? n.text : null,
         created_at: n.createdAt,
-        createdAt: n.createdAt,
         emojis: mapEmojis(n.emojis).concat(mapReactionEmojis(n.reactionEmojis)),
         replies_count: n.repliesCount,
         reblogs_count: n.renoteCount,