remove scss since using the simple style

assets/stylesheets/application.css.scss

@@ -131,7 +131,6 @@
         'pages/tcl_tk',
         'pages/tensorflow',
         'pages/terraform',
-        'pages/threejs',
         'pages/typescript',
         'pages/underscore',
         'pages/vue',

assets/stylesheets/pages/_threejs.scss

@@ -1,47 +0,0 @@
-._threejs {
-    // Code blocks
-    pre, code {
-      background-color: #f5f5f5;
-      border-radius: 3px;
-      padding: 0.2em 0.4em;
-    }
-    pre {
-      padding: 1em;
-      margin: 1em 0;
-      overflow: auto;
-      code {
-        background: none;
-        padding: 0;
-      }
-    }
-    // Links
-    a {
-      color: #049EF4;
-      text-decoration: none;
-      &:hover {
-        text-decoration: underline;
-      }
-    }
-    // Headings
-    h2 {
-      margin-top: 2em;
-      padding-bottom: 0.3em;
-      border-bottom: 1px solid #eaecef;
-    }
-    h3 {
-      margin-top: 1.5em;
-    }
-    // Tables
-    table {
-      border-collapse: collapse;
-      margin: 1em 0;
-      width: 100%;
-    }
-    th, td {
-      border: 1px solid #dfe2e5;
-      padding: 6px 13px;
-    }
-    tr:nth-child(2n) {
-      background-color: #f6f8fa;
-    }
-  }