♻️ Remove new-css-system from workspace toolbar

frontend/resources/styles/main/partials/left-toolbar.scss

@@ -1,71 +0,0 @@
-// This Source Code Form is subject to the terms of the Mozilla Public
-// License, v. 2.0. If a copy of the MPL was not distributed with this
-// file, You can obtain one at http://mozilla.org/MPL/2.0/.
-//
-// Copyright (c) KALEIDOS INC
-
-.left-toolbar {
-  background-color: $color-gray-50;
-  align-items: center;
-  border-right: 1px solid $color-gray-60;
-  display: flex;
-  flex-direction: column;
-  overflow: visible;
-  height: 100%;
-}
-
-.left-toolbar-options {
-  align-items: center;
-  display: flex;
-  flex-direction: column;
-  margin: 0;
-
-  li {
-    position: relative;
-    color: $color-gray-20;
-    button {
-      background-color: transparent;
-      border: none;
-      cursor: pointer;
-      height: 48px;
-      width: 48px;
-      display: flex;
-      align-items: center;
-      justify-content: center;
-      flex-shrink: 0;
-      color: inherit;
-
-      svg {
-        fill: $color-gray-20;
-        height: 16px;
-        width: 16px;
-      }
-
-      &:hover {
-        background-color: $color-primary;
-        color: $color-gray-50;
-
-        svg {
-          fill: $color-gray-50;
-        }
-      }
-
-      &.selected {
-        background-color: $color-gray-60;
-        color: $color-primary;
-
-        svg {
-          fill: $color-primary;
-        }
-      }
-
-      &.separator {
-        border-top: 1px solid $color-gray-60;
-      }
-    }
-  }
-
-  &.panels {
-    margin-top: auto;
-  }
-}