Remove changelog skins

The feature wasn't used in the last 2 years anyway.

src/css/changelog_skins.scss

@@ -1,18 +0,0 @@
-// [data-changelog-skin="achievements"] {
-//     background: #f8f8f8;
-
-//     @include DarkThemeOverride {
-//         background: rgba(0, 10, 20, 0.2);
-//     }
-
-//     @include S(border-radius, 5px);
-//     &::before {
-//         content: " ";
-//         width: 100%;
-//         display: block;
-//         background: uiResource("changelog_skins/achievements.noinline.png") center center / cover no-repeat !important;
-//         @include S(height, 80px);
-//         @include S(border-radius, 5px);
-//         @include S(margin-bottom, 5px);
-//     }
-// }

src/css/main.scss

@@ -17,7 +17,6 @@
 @import "animations";
 @import "game_state";
 @import "textual_game_state";
-@import "changelog_skins";
 
 @import "states/preload";
 @import "states/main_menu";

src/js/changelog.js

@@ -107,7 +107,6 @@ export const CHANGELOG = [
     {
         version: "1.3.0",
         date: "12.03.2020",
-        skin: "achievements",
         entries: [
             "There are now <strong>45 Steam Achievements!</strong>",
             "Fixed constant signals being editable from the regular layer",

src/js/states/changelog.js

@@ -1,6 +1,6 @@
+import { CHANGELOG } from "../changelog";
 import { TextualGameState } from "../core/textual_game_state";
 import { T } from "../translations";
-import { CHANGELOG } from "../changelog";
 
 export class ChangelogState extends TextualGameState {
     constructor() {
@@ -19,7 +19,7 @@ export class ChangelogState extends TextualGameState {
         for (let i = 0; i < entries.length; ++i) {
             const entry = entries[i];
             html += `
-                <div class="entry" data-changelog-skin="${entry.skin || "default"}">
+                <div class="entry">
                     <span class="version">${entry.version}</span>
                     <span class="date">${entry.date}</span>
                     <ul class="changes">

src/js/states/preload.js

@@ -160,9 +160,7 @@ export class PreloadState extends GameState {
                         for (let i = 0; i < changelogEntries.length; ++i) {
                             const entry = changelogEntries[i];
                             dialogHtml += `
-                            <div class="changelogDialogEntry" data-changelog-skin="${
-                                entry.skin || "default"
-                            }">
+                            <div class="changelogDialogEntry">
                                 <span class="version">${entry.version}</span>
                                 <span class="date">${entry.date}</span>
                                 <ul class="changes">